I just spoke with a friend in NYC and she told me they are running low on N95's so they are wearing surgical masks over the N95's to keep them clean and they will wear the same N95 all day as needed. Then if her N95 mask is clean at the end of the day she'll put it in a bag and then reuse it 4 days later. She's trying to cycle through 4 of her own masks as long as they aren't soiled.