@tbroyer If you are wearing a mask you should replace your mask with a clean one after every cough into it. Should you wear a mask is a different question. Masks saturate with water sufficiently to create microdroplets long before they feel wet or damp, perhaps within 5 min.

Now what happens next depends on different factors:
if you are not infected, any viral droplets that your mask catches will now be turned into microdroplets that you are repeatedly inhaling... increasing your risk of infection... but droplets evaporate fast

It’s typically sub-millisecond in dry (ie indoor) air to get down to ~100nm (ie basically just one virus and a mono layer of water) which your mask will likely not catch anyway... so the mask does not protect you

Now the counter case, if you are infected:
1. If symptomatic, STOP! stay home and isolate.
2. If pre-symptomatic/ asymptomatic the question is are you breathing out the virus with your normal breathing. If no => masks useless. If yes... we’ll the studies are not done

Stuff like the JAMA meta analysis and the Chinese Wuhan study says it’s unlikely that you are spreading the virus, suggesting masks are useless. On the counter, if you wear cloth mask for more than ~5-10min you are now spreading the virus more, mask would be worse