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If you ever smoke marijuana, you know that although ... president of the American House Cleaners Association told The Washington Post that air purifiers can work well to reduce the smell of ...

Some particles that make up the smoke are heavier than the air ... to reduce the smell of marijuana in the home, says Grace Reynolds, president of the American House Cleaners Association.

And the agency warns that even the psychoactive effects of secondhand marijuana smoke can be experienced ... an appropriately sized air purifier with enough clean air delivery rate (CADR) for ...