Hey, Winston, Sputum (virus + fluids) would be a problem for anyone 'hit' with its droplets; the closer one is and the more confined the air volume in the room, the greater the possible exposure. Near as I have read, the more virus you inhale the greater the risk; I think that small amounts of virus can probably be handled by a healthy immune system. (This is where I get mad at the CDC/NIH and its toadies. They say that CV-19 is "novel," that we haven't seen this exact viral genome (blueprint) before. That last may be true but coronaviruses make up ~1/3 of all common cold viruses so that means (IMO) our immune systems have seen bits and pieces/strands of coronavirus all of our lives. That may be why there are so many asymptomatic cases--those people handled the virus like LSU handled Clemson)! As to the wearing of a mask, I do not do so because of 1) the general inefficiency of the 'filter' 2) dilution effect of an outdoor and large air volume restaurant/store 3) my strong belief that the way we as a country beat the virus is by allowing the natural development of herd immunity (65+% of total pop.); sure, hiding under one's bed will "stop the spread" but it also stops the transmission needed to defeat the virus via herd immunity; 4) to each his own. I'm working full time, shooting at the gun club, shopping in big box stores, etc. all w/o any masks. Finally, don't hold your breath for a vaccine. There has NEVER been an effective, persistent vaccine for ANY coronavirus type; these are not like H1N1, etc, that have distinct proteins which can be targeted by vaccines. And I won't be offering my arm for a rushed-into-production, minimally-tested, unknown-long-term-effect vaccine put out by the unholy collaboration of BigPharma and the serial liars of the CDC/NIH. Oops! Pardon my rant! "If social distancing works why do we need masks? If masks work why do we need social distancing?"
Or some fucking pureed hay or whatever sheep eat when at a restaurant Oh wait, you are one too! Pick a side lil bo peep.