Real case study before the vaccine were even available so long azz time ago.
Nail salon worker tested positive. Because they had masked on, non of their close contact client has covid.
My logic to this is an observation logic. Some girls with mask on are so pretty. Once they take out that mask, her stock went down. With facial make up, it used to be the eyes, the cheek, the lips. Now she can save some time as all she has to do is to concentrate on her eyes cuz that is about all that a ninja are allowing the public to see.
Plus it works well with the muslim women. She can cover from head to toe but have that medical mask on and she's one of us.
