I just listened to a doctor on tv....he said everyone should wear a mask because once the virus enters you nose or mouth the virus multiplies very rapidly...so every time you breathe out, talk or sneeze droplets filled with virus are expelled....
that said, if you have the virus and you are wearing a mask....your infected droplets are collecting in the mask....and you are reinfecting yourself with every breath.....that could be why people are getting so sick, so fast....
good god almighty that has got to be the most idiotic thing I've ever heard you say....... you can't "self" infect once you got it you got it, your immune system can make it better or worse but touching your own droplets can't make you worse.