Even masking tape is better than nothing. Close all your windows and doors and seal any air leaks (including the mail slot, if you have one) with weather stripping, if available.Using an air purifier helps, but there’s more you can do to keep your dwelling as smoke-free as possible. Smoke can travel hundreds of miles from the source, so even if you live far away from a fire and are in no immediate danger, you could still have harmful smoke coming into your home. “That’s the one thing they all have in common.” “If you look at any of the top-rated air purifiers tested in our labs, they’re physically big because of the big HEPA filter inside of them,” says John Galeotafiore, associate director of product testing at Consumer Reports. Most of CR’s recommended air purifiers fall into that category. Purifiers for rooms larger than 350 square feet are much better at removing smoke. These models tend to perform poorly in our tests, plus you’ll always get better results with a unit that’s rated well for a larger space than you intend to use it in. Our experts advise against buying one that’s marketed for rooms smaller than 150 square feet. ![]() HEPA air purifiers can range from $50 to more than $1,000. If you want to get rid of the smell of smoke in addition to particles, you’ll want an air purifier that also has a large carbon filter to absorb odors. The best air purifiers fitted with HEPA filters can reduce particle concentrations by as much as 85 percent, according to the EPA. The most effective against smoke have a HEPA filter and a large fan that helps to force air through a fine mesh to trap particles. Not all air purifiers do a good job of removing smoke particulates (you can see proof of that in our air purifier ratings).
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