b/c they are not as effective as many once thought. In fact they are not very effective at all: https://www.cidrap.umn.edu/covid-19/podcasts-webinars/special-e

b/c they are not as effective as many once thought. In fact they are not very effective at all: https://www.cidrap.umn.edu/covid-19/podcasts-webinars/special-ep-masks https://www.cidrap.umn.edu/covid-19/podcasts-webinars/specia... Transcript at: https://www.cidrap.umn.edu/sites/default/files/public/downloads/special_episode_masks_6.2.20_0.pdf https://www.cidrap.umn.edu/sites/default/files/public/downlo... Simplified explanation: when we breathe we exhale tiny "aerosols" and when we cough or sneeze we exhale far larger "droplets". The dust you see in a darkened room when a beam of sunlight enters is an aerosol. Aerosols are like marbles compared to droplets' boulders. Covid-19 hitches a ride on both aerosols and droplets. Cloth masks can stop droplets but cannot stop aerosols, which flow in/out a mask's gaps. To stop aerosols you'd have to wear something with an airtight seal, something akin to a swim mask. Cloth masks and even surgical masks do not do this. Cloth masks don't work against aerosols; even surgical masks won't protect you (indeed they don't protect surgical patients or doctors either). Never trust a mask against Covid-19. A final note from the interview with Michael Osterholm: "When you wear your cloth mask in public, realize that it may only provide very limited protection. The most important thing that you can do to protect yourself and others is distance." ---------- And for God's sake put your goddam nose under the mask - if we can see your nostrils we're doomed, simply doomed!