What does a mask do? Blocks respiratory droplets coming from your mouth and throat.
Two simple demos:
First, I sneezed, sang, talked & coughed toward an agar culture plate with or without a mask. Bacteria colonies show where droplets landed. A mask blocks virtually all of them.
At that phase in my life where my reaction to the question ‘do you have any kids?’ is “OH NO, definitely not!” & thinking to myself ‘ha what a crazy question’.
When in fact that is 100% a valid question as many many many people have if not 1, more likely 2 kids by my age 😅