Duration Required for Airing Out a New Mattress are known to emit a smell, commonly referred to as “off-gassing,” which can be a result of chemicals used in the manufacturing process. The duration of the off-gassing smell can vary depending on several factors, including the type of mattress, the materials used, and the ventilation of the room.

Generally, the off-gassing smell from a new mattress can last anywhere from a few hours to a few days, with the strongest odors dissipating within the first few days. This is because most mattresses are made from synthetic materials such as foam, which can release volatile organic compounds (VOCs) during the first few days or weeks after unboxing.
However, the duration and strength of the off-gassing smell can also depend on other factors, such as the level of ventilation in the room, the temperature and humidity of the room, and the type and amount of chemicals used in the manufacturing process.
To minimize the off-gassing smell, it is recommended to unbox and unwrap the mattress in a well-ventilated room with windows open, allowing fresh air to circulate around the mattress. It is also recommended to leave the mattress in a well-ventilated room for a few days before using it to allow any remaining smells to dissipate.
Is VOC Off-Gassing Harmful to Your Health
Volatile organic compounds (VOCs) are chemicals that can be found in various household items, such as cleaning products, paint, furniture, and flooring. While these items make our homes more comfortable and aesthetically pleasing, they can also release VOCs into the air, a process called off-gassing. This raises the question, is VOC off-gassing harmful to your health?

The short answer is yes, VOC off-gassing can be harmful to your health. The level of harm depends on several factors, such as the concentration of VOCs, the duration of exposure, and individual sensitivity. In general, prolonged exposure to high levels of VOCs can cause a range of health problems, from minor irritations to more severe issues.
The most common symptoms of VOC exposure are eye, nose, and throat irritation, headaches, dizziness, and fatigue. In some cases, exposure to high levels of VOCs can cause damage to the liver, kidneys, or central nervous system. Additionally, some VOCs are known carcinogens and can cause cancer with prolonged exposure.
Certain groups of people are more vulnerable to the effects of VOCs, such as infants, children, pregnant women, and people with respiratory problems or allergies. People with pre-existing health conditions should also take extra precautions to avoid exposure to VOCs.
The best way to protect yourself and your family from VOC off-gassing is to choose low or zero-VOC products when possible. Look for products that are labeled as “low VOC” or “zero VOC.” These products are formulated to have minimal or no VOCs, making them safer to use. Additionally, make sure to use products as directed and in well-ventilated areas. Open windows and use fans to improve air circulation and reduce the concentration of VOCs in the air.
If you suspect that you have been exposed to high levels of VOCs, it is important to seek medical attention. Your doctor can assess your symptoms and recommend appropriate treatment. In severe cases, you may need to be hospitalized for monitoring and treatment.
Which Materials and Ingredients Emit VOC Gas?
Materials and Ingredients that Emit VOCs
Material/Ingredient | Potential VOC Emissions |
---|---|
Paints and Coatings | High |
Cleaning Products | High |
Adhesives and Sealants | High |
Flooring (carpet, vinyl, laminate) | Medium to High |
Building Materials (plywood, particleboard, MDF) | Medium to High |
Furniture (upholstered, pressed wood) | Medium to High |
Personal Care Products (perfumes, hairspray) | Medium |
Pesticides and Herbicides | Medium |
Air Fresheners | Low to Medium |
Dry-Cleaned Clothing | Low to Medium |
Candles | Low |
Printer Ink and Toner | Low |
What is causing my new mattress to smell?
A new mattress can emit a smell, commonly known as off-gassing, which is caused by the release of volatile organic compounds (VOCs) during the manufacturing process. These VOCs can come from the adhesives, foams, and other materials used in the construction of the mattress. The strength and duration of the off-gassing smell can vary depending on factors such as the type of mattress, the materials used, and the level of ventilation in the room. While the smell can be unpleasant, it is typically not harmful to health and will dissipate over time with proper ventilation.
What chemicals do mattress release during off-gassing?
During off-gassing, mattresses can release various chemicals, including volatile organic compounds (VOCs), which are a group of chemicals that evaporate at room temperature. Some of the VOCs that can be released during off-gassing include formaldehyde, benzene, and toluene.

These chemicals can come from adhesives, foams, and other materials used in the construction of the mattress. While the amount and type of chemicals released can vary depending on the type of mattress and materials used.
it is important to note that the levels are typically low and generally considered safe for most people. However, individuals with chemical sensitivities may experience symptoms such as headaches, nausea, and respiratory irritation, and may want to consider a mattress made from natural materials or one with low VOC emissions.
Is off-gassing harmful to your health?
Off-gassing is the release of volatile organic compounds (VOCs) from a new mattress, which can produce an unpleasant odor. While the smell can be unpleasant, it is typically not harmful to health and will dissipate over time with proper ventilation. However, some individuals with chemical sensitivities may experience symptoms such as headaches, nausea, and respiratory irritation from exposure to VOCs.

The amount and type of VOCs released during off-gassing can vary depending on the type of mattress and materials used. Some of the VOCs that can be released during off-gassing include formaldehyde, benzene, and toluene. While the levels of these chemicals are typically low and generally considered safe for most people, long-term exposure to high levels of these chemicals has been linked to health problems such as cancer and neurological effects.
To minimize the potential health risks of off-gassing, it is recommended to choose a mattress that has been certified by organizations such as CertiPUR-US or GREENGUARD that test for low VOC emissions. Additionally, it is recommended to unbox and unwrap the mattress in a well-ventilated room with windows open, allowing fresh air to circulate around the mattress. It is also recommended to leave the mattress in a well-ventilated room for a few days before using it to allow any remaining smells to dissipate.
Overall, while off-gassing is typically not harmful to health, it is important to take steps to minimize exposure to VOCs and to choose a mattress that has been certified for low emissions if you have chemical sensitivities or concerns about potential health risks.
How long will my mattress be off-gas?
The length of time that a new mattress will off-gas can vary depending on several factors, such as the type of mattress, the materials used, and the level of ventilation in the room. In general, most mattresses will have a noticeable odor for the first few days to a couple of weeks after unboxing, but the smell should gradually dissipate over time.

Some types of mattresses, such as those made from natural materials like latex or organic cotton, may have a milder off-gassing smell that dissipates more quickly than those made from synthetic materials like memory foam or polyurethane foam. Additionally, a mattress that has been vacuum-sealed in plastic packaging for an extended period of time may take longer to off-gas because the trapped air inside the packaging can slow down the process.
To help speed up the off-gassing process and minimize any lingering smells, it is recommended to unbox and unwrap the mattress in a well-ventilated room with windows open, allowing fresh air to circulate around the mattress. It is also recommended to leave the mattress in a well-ventilated room for a few days before using it to allow any remaining smells to dissipate. In general, most mattresses should be fully off-gassed within a few weeks of use.
How much do leading brand mattress off-gas?
The amount of off-gassing from leading brand mattresses can vary depending on the specific model and materials used in its construction. Some mattresses may have lower VOC emissions than others, and some manufacturers may have taken steps to reduce off-gassing by using safer materials or production methods.

Several organizations, such as CertiPUR-US and GREENGUARD, have established standards for low VOC emissions in mattresses and certify products that meet these standards. Mattresses that are certified by these organizations are tested for various emissions, including formaldehyde, phthalates, and volatile organic compounds (VOCs).
While specific data on the amount of off-gassing from leading brand mattresses may not be readily available, it is important to note that most mattresses should be fully off-gassed within a few weeks of use, and any VOC emissions should gradually dissipate over time. Additionally, choosing a mattress that has been certified for low emissions by a reputable organization can help reduce potential health risks associated with off-gassing.
If you have concerns about the amount of off-gassing from a specific mattress, it may be helpful to research the materials used in its construction and look for certifications that indicate low VOC emissions. You may also want to consider choosing a mattress made from natural materials, such as organic cotton or latex, which may have milder off-gassing smells and fewer chemical additives.
Tips for off-gassing a new mattress
If you have recently purchased a new mattress and are experiencing off-gassing odors, there are several steps you can take to help minimize the smell and speed up the off-gassing process. Here are some tips:
- Unbox and unwrap the mattress in a well-ventilated room with windows open. This will allow fresh air to circulate around the mattress and help dissipate any lingering smells.
- Leave the mattress in a well-ventilated room for a few days before using it. This will give the mattress time to off-gas and allow any remaining smells to dissipate.
- Use a fan to increase airflow around the mattress. This will help speed up the off-gassing process and help the mattress smell less.
- Sprinkle baking soda on the mattress and leave it for a few hours before vacuuming it off. Baking soda can help absorb odors and reduce the smell of off-gassing.
- Consider using an air purifier in the room to help filter out any airborne particles and reduce the smell of off-gassing.
Remember, most mattresses should be fully off-gassed within a few weeks of use, and any VOC emissions should gradually dissipate over time. If you have concerns about the amount of off-gassing from your mattress or are experiencing persistent odors, it may be helpful to contact the manufacturer or seek the advice of a professional.
How can I speed up the off-gassing process of my new mattress?
If you want to speed up the off-gassing process of your new mattress, here are a few things you can do:
- Increase ventilation: One of the simplest ways to speed up the off-gassing process is to increase ventilation in the room where the mattress is located. Open windows and doors to allow fresh air to circulate, and use a fan to help move air around the room.
- Remove the mattress cover: If your mattress has a cover, remove it and let the mattress breathe. The cover may be trapping some of the off-gassing odors and slowing down the process.
- Use baking soda: Sprinkling baking soda on the mattress can help absorb odors and speed up the off-gassing process. Let it sit for a few hours and then vacuum it up.
- Air purifier: Consider using an air purifier in the room to help filter out any airborne particles and reduce the smell of off-gassing.
- Avoid direct sunlight: While it may be tempting to put your new mattress in direct sunlight, this can actually slow down the off-gassing process. UV rays can break down the materials in the mattress and make off-gassing worse.
Remember, it’s important to give your mattress time to off-gas properly. While you can take steps to speed up the process, it’s important not to rush it. Most mattresses should be fully off-gassed within a few weeks of use, and any VOC emissions should gradually dissipate over time.
Frequently Asked Questions
How long should I air out a new mattress?
It is recommended to air out a new mattress for at least 72 hours or three days before using it. This is because many mattresses contain chemicals that can release VOCs, which can be harmful to your health. By airing out the mattress, you allow these chemicals to dissipate, reducing the risk of exposure to harmful VOCs.
Is it safe to sleep on a new mattress before airing it out?
While it is possible to sleep on a new mattress before airing it out, it is not recommended. The chemicals that are emitted from a new mattress can cause health problems, especially for people with respiratory issues or chemical sensitivities. It is better to err on the side of caution and allow the mattress to air out for at least 72 hours before sleeping on it.
How can I speed up the process of airing out a new mattress?
You can speed up the process of airing out a new mattress by opening windows and doors in the room to increase ventilation. Using a fan to circulate air around the mattress can also help. Additionally, you can sprinkle baking soda over the surface of the mattress to absorb any odors.
What if I am sensitive to the odor of a new mattress?
If you are sensitive to the odor of a new mattress, you can try placing an air purifier in the room to help remove any harmful chemicals from the air. Alternatively, you can consider purchasing a mattress made from natural materials that are less likely to emit VOCs.