Facemasks, Particle Size, and Your Chances of Catching ...
Apr 07, 2020· For your consideration, here are a few particle sizes from some pollutants you are likely to encounter, from the smallest to the largest: Smoke from natural materials to micron. Cornstarch dust to Tobacco smoke to 25 microns. Talcum dust to 50 microns. Burning wood to 3 microns. Outdoor dust microns. Fog 1 to ...