Unfortunately, not all air purifiers filter ultrafine or nanoparticles
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That is not brand promotion it is a documented pattern in peer-reviewed literature on thirdhand smoke remediation
The four units in this guide were chosen because each handles smoke in a different way
Air purifiers, on the other hand, are typically portable devices designed to target air quality in specific rooms or areas of a home, such as bedrooms, kitchens, living rooms, or spaces where pets spend a lot of time

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