Where can you buy doctors masks?

If you are in United States or Canada its called a cough mask! it prevents spreading germs through cough you can get them in any doctor's office or Hospital for FREE! you can get them at Bartell Drugs and QFC and Walmart.I would prefer Bartell Drugs I got a cheap 99 cent drink sugar less drink icee pink grapefruit you can get almost everything from food aisles to the pharmacy to the makeup counters!