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Respirators (N95, KN95, FFP2) Respirators such as N95, KN95, and FFP2 masks are designed to fit tightly to your face and filter out at least 95% of airborne particles as small as 0.3 microns, much smaller than most smoke particles

Retrieved October 25, 2022

In some cases, as with climate change, a genuine scientific consensus is de-valued

1 2 "Report Breaks Down Paraguay to Brazil Cigarette Smuggling Trail"

Archived from the original on May 11, 2022

Journal of General Internal Medicine 2008;23(9):13616
