If the heat or saliva of a disposable mask is soaked, the effect of isolating bacteria will be greatly reduced. Generally speaking, we should prepare more masks to replace them. Don't wear a face mask. Fold it up and put it in a clean envelope. The side near the nose and mouth should be folded inwar

If the heat or saliva of a disposable mask is soaked, the effect of isolating bacteria will be greatly reduced. Generally speaking, we should prepare more masks to replace them. Don't wear a face mask. Fold it up and put it in a clean envelope. The side near the nose and mouth should be folded inwar