Rumor identification: There is only one correct way to wear a mask. Rumor analysis: There is only one correct way to wear a mask is to wear it correctly, the specific wearing method is as follows: 1, distinguish the mask anyway: the colored side (usually green, blue or pink) facing outward, the white or light-colored side facing inward. If you wear the opposite, the outer layer facing inward, the exhaled water vapor can not pass through, the mask will lose its blocking effect when wet. 2, need to pull the fold up and down, so that the mask covers the mouth, nose and jaw. Put the fingertips of both hands along the metal strip of the nose bridge and press slowly from the middle to both sides to fit the nose bridge. Adjust the mask so that its perimeter fully fits the face. 3. If the mask is used and then changed to another side to continue to wear, it will allow the harmful germs that have been blocked by the mask to be inhaled again. Special Note: Compared to medical surgical masks, N95 masks are more airtight, but both can be worn for the purpose of self-protection and reducing the risk of respiratory infections. However, the protective effect of any type of mask has a time limit and should be replaced once every 4 hours. When the mask becomes wet or stained with secretions, it should be replaced immediately. In addition, care should be taken to wash your hands before wearing the mask to reduce the possibility of contamination of the mask.