QP!
Verified User
Masks absolutely work in the situations i described.Masks don't work for covid, period. Their pores are far too large and the size of the virus is far too small. Masks typically aren't worn properly nor are they worn 24/7/365.
What you are speaking to is prolonged exposure and that is correct as the aerosol part of the breath, the tiny micro drops wil eventually spread out and you will breath them as they go righ thru the mask.
But for short exposure where you are just near a person for a short time, such as a coffee shop line, it is the large drops propelled via coughing, talking and sneezing and how far they travel and how fast that are the bigger threat then the slower build up of the aerosol.
You have to be an idiot to see the sneeze picture i put above and not understand how that spread of breath, done in an instant is not propelling the covid virus out with it. The virus is in that sneeze expellant.
Slowing that spread out of that air, in short exposure so you can leave the area absolutely can work to prevent transmission.