Vanderbilt commodores cloth face mask . When obligatory to wear a mask in public, do not do this so that the mask does not become a "nest" - Photo 2.
From March 16, it is mandatory to wear a mask in public. Illustration
According to Dr. Tran Quoc Khanh - Viet Duc Hospital on his personal page, in order to prevent the mask from becoming a "disease", avoid these actions: