If you're buying a new mattress to replace the one you want to get rid of, ask the seller if you can take the old one and return it to the manufacturer. With an estimated 50,000 mattresses being discarded every day in the United States, many manufacturers are taking on the task of recycling mattresses themselves. If you really want to make sure that the smell of the new mattress disappears before you sleep on it, let the mattress air out for a few days or up to a week. The best thing to do if you're experiencing a gas discharge is to give your mattress time to breathe and air out of the box.
Most VOCs will be emitted within the first hour after opening the mattress, but may continue to be released for an unknown amount of time. Usually, that new mattress smell will go away somewhere in a few hours or a few days. If you want to limit your exposure to chemicals or just don't want to worry about getting rid of the smell, start by looking for a Certi-PUR certified mattress. It's important to think about how you're going to get rid of your old mattress before they give you the new one.
If you have a foam mattress with a strong smell of gas evolution, there are some proactive steps you can take to eliminate the odor from the new mattress. There are several ways to dispose of a used mattress, from recycling it to donating it and throwing it away. Fortunately, there are ways to remove odor from the new mattress by ventilating the mattress outside or with an open window. The problem is particularly bad for memory foam - in fact, even the best hybrid mattresses can still smell, but I hope that after a few days, if you follow the tips above, the smell will subside and you will be satisfied with your new mattress for at least another 10 years.
Common mattress chemicals that release gases include benzene, methylene chloride, formaldehyde, and chlorofluorocarbons (CFCs). The strong chemical smell of a new mattress can be unpleasant, but it is easy to remove and only requires patience. If you want to limit your exposure to chemicals or just don't want to get rid of the smell, start by looking for a Certi-PUR certified mattress. For example, hybrid innerspring foam mattresses tend to need to be replaced earlier, around 6 years old, while simple innerspring mattresses can last up to 10 years (and even longer if they are double-sided).