If she really is a nurse, that is an incredibly stupid statement. Masks don’t protect you. Wearing one is like erecting a chain link fence to keep out mosquitoes. However, they DO offer protection to others in case you have COVID. Wear the mask to protect your fellow man. Have respect for others for once in some’s miserable self centered life.
masks sorta protect you, generally its recommended that if you, an uninfected person, 100% have to be around known infected people that you wear a mask because it does lower your chance of being infected by about 65%
https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(20)31142-9/fulltext
theres a paper detailing that but super quick summary is that wearing a mask protects the mask wearer by about 65%
https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(20)31142-9/fulltext
theres a paper detailing that but super quick summary is that wearing a mask protects the mask wearer by about 65%