A mask doesn't save yourself from an illness. It just reduce the spread rate of the disease. 

Jeez nostr:npub1umxktava025m6edj0v66t3culcnqrrscl9whjah2nkjdv8wu229qqgd244 are you ok with this misinformation?
I thought quarantining and keeping distance was the best way to stay away from the disease.