Masks do a great deal to reduce transmission of Covid-19. (This isn't true of every disease.) Covid-19 is mostly acquired by inhaling droplets of water+virus ex

Masks do a great deal to reduce transmission of Covid-19. (This isn't true of every disease.) Covid-19 is mostly acquired by inhaling droplets of water+virus exhaled by carriers, so masks work quite well. A large amount of evidence for this is collected at https://masks4all.co/facts/ https://masks4all.co/facts/