I read a blog awhile ago about a guy that wore his N95 riding a bike, 2 to 3 hours a day in a fairly polluted city. After a week of riding he got the mask tested at a 3M facility. It still had 98% of it’s original capability.
One doctor said he was using the same two face masks until the rubber bands stretched too much. I bought a pack of rubber bands at Staples to replace mine if need be.
I have to tie a little knot in the band that goes behind my pencil-neck to make it tight enough in the first place!
Almost humorous video at the link...
Indian police use violence against coronavirus lockdown offenders
https://www.yahoo.com/news/indian-police-violence-against-coronavirus-173328723.html
Coming soon to a little town near you lol