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There's no way around it: access to clean air is essential. If you're in an area affected by dust, pollen or frequent wildfires, suffer from allergies, own a few dander-ridden pets or some combination of all of the above, you'll definitely benefit from having an air purifier in your home. These devices can get rid of odors, absorb dust particles, rid the air of harmful smoke and much, much more. We found one that's smartphone-compatible, cleans spaces up to 926 square feet and has a reviewer saying it "eliminates smoke completely" while it's running at high speed. And right now, it's on sale for 29% off, knocking its price down to under $100.