Try taking a face mask after cold, it is FILLED with snot, mucus, germs, and bacteria. Literally, imagine putting a humongous plate of germs next to your face. I have had to change it out miltiple times during training. Guess what people started doing week 2? They took them off and never wore them again. Turns out convenience will always trump whatever virtue signalling bullshit you throw at people, even the normies. Do you really want to be wearing a wet, cloth on your face all day?