Precautions for the use of masks Wash your hands before wearing the mask, or avoid touching the inner side of the mask with your hands during the process of wearing the mask to reduce the possibility of the mask being contaminated. Distinguish the inside and outside, top and bottom of the mask. Do not squeeze the mask with your hands. N95 masks can only isolate the virus on the surface of the mask. If you squeeze the mask with your hands, the virus will soak through the mask with droplets, which will easily cause virus infection. Try to make the mask and the face have a good seal. The simple test method is: after wearing the mask, exhale forcefully, and the air cannot leak from the edge of the mask. The protective mask must fit snugly against the user's face, and the user must shave to ensure that the mask fits snugly against the face. Beards and anything between the mask seal and the face can leak the mask. After adjusting the position of the mask according to your face shape, use the index fingers of both hands to press the nose clip along the upper edge of the mask to make it close to the face.

Ordinary people can wear ordinary medical masks, but here I want to appeal to everyone to try to leave these medical protective masks to the frontline medical staff, who are the ones who need these masks the most. Don't just pursue high-level protective masks. Ordinary medical masks are enough for most healthy people who are not in the epidemic area. The virus is still raging. In order to meet the daily protection needs, anti-particulate respirators, that is, dust masks, are essential. Whether it is a medical surgical mask or an FFP2 mask, it can isolate the virus in daily life. But any mask is not a panacea. It is not necessary. Going out less and gathering less, washing hands frequently and ventilating more are the best protection for yourself and your family.