Is it true that masks only work to prevent germs/diseases from exiting one’s mouth/nose and not from entering one’s mouth/nose? If so, why?

Question

Is it true that masks only work to prevent germs/diseases from exiting one’s mouth/nose and not from entering one’s mouth/nose? If so, why?

In: Other

Answer 1

the masks aren’t very effective at filtering, they simply limit how far your droplets fly, from several meters down to a foot or so. The mask doesn’t cover your eyes or other sensitive tissues that could get infected