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I have spoken with manufacturers, engineers, academics, and experts

Its a no-nonsense workhorse for people who need serious, long-term air cleaning

(You could buy our small-space pick, the Blueair Blue Pure 511, and five years worth of filters, for under $300.) Molekule makes some of the worst purifiers weve ever tested

The most infamous example of this was so-called Project SCUM (for "Subculture Urban Marketing"), a plan by RJ Reynolds in the mid-1990s to market their Red Kamel brand to gay men in San Francisco's Castro District and homeless people in the city's Tenderloin neighborhood

If they have the right CADR and are appropriately sized for the intended room, they can help reduce smoke