> Single layer cloth masks do nothing. Really? If an infected person standing in front of you in a crowded room sneezes, you believe the risks would be unaffec

> Single layer cloth masks do nothing. Really? If an infected person standing in front of you in a crowded room sneezes, you believe the risks would be unaffected by whether or not they were wearing a cloth mask? Whether their sneeze were blocked or droplets of spittle and mucus went spewing throughout the room, your exposure and that of people standing in distant parts of the room would be identical? In general I hate the “citation needed” forum response, but extraordinary claims require extraordinary evidence.