The mask is as effective at stopping a virus as underwears are at stopping a fart It's a fact Now most people don't realize just that, and as a result are right for all the wrong reasons about fuck the mask https://www.diffen.com/difference/Bacteria_vs_Virus >>Viruses are the smallest and simplest life form known. They are 10 to 100 times smaller than bacteria. https://en.wikipedia.org/wiki/Virus >>Most virus species have virions too small to be seen with an optical microscope as they are one hundredth the size of most bacteria. ... So yeah, a tissue mask is going to be as effective at stopping an airborne virus as a strainer will be to collect water That's why they don't use those shit tissue masks everybody is asked to wear in actual labs https://upload.wikimedia.org/wikipedia/commons/8/86/Influenza_virus_research.jpg Because it's not going to work