Just a note: The mask I wear is just for getting a person and out of an unexpected chemical exposure situation - not for wearing for hours of shopping or anything like that. I wear a hat or hood over my long hair and extra clothes (long sleeves, long pants, gloves, and socks) that I can take off before getting back in the vehicle after a trip into the health food store to get food or having to walk into the water supply store or having to go into a physician office. I still keep the mask on to drive though because of diesel fumes, car exhaust fumes, etc. and don't take it off until I get home. At least I am able to drive now - even if it is once every two of three weeks.