✌🏼I was told one time at my husband's pulmonologist appointment that I had to wear a mask, my reply...I'm severly claustrophobic you put a mask on me shit's going to get real, real fast. No mask ever, work in the public, never took anything home to my husband who has chronic copd. We take Zinc Quercetin twice a day have done for almost 3 years now I'm 66 and he is 70 this Sept. Not even the sniffles.