The commenter above me is completely right. 'Cause its essentially a virus (which is wayy smaller than a bacteria) masks aren't 100% full proof as the nooks n crevices of the masks have a larger surface area. BUT just 'cause its not a 100 doesn't mean it doesn't offer any protection.(protection rate with N95 mask is almost 90%) That is why it is BEST to wear a mask at all times when there is an increased risk of exposure. Although we in our profession wear the protective equipment kit we're still cautious and make sure to take a bath and douse ourself with sanitizers n surface sprays before we come into contact with our family only 'cause the exposure rate can be that high. So as long as u wear a mask and social distance, you'll be fine.
Htf they wore and mask and still have covid...even an atheist like me pray for god now