Is it necessary to wear N95 masks when traveling now?

If you go to a crowded place (such as a supermarket, shopping mall, hospital or airport), it is strongly recommended to wear a professional N-95 mask;

The second is to wear a mask correctly.

N-95 masks are divided into head-wearing and ear-banding types. The first time you wear a head-wearing N-95 mask, you need to open the mask (pull both sides of the mask apart), hold the mask in your left hand, then buckle the mask on the nose and mouth, and pull the door-to-door mask strap over your head and buckle your ears with your right hand Then pull the lower mask strap over the top of the head and buckle it on the back of the neck, adjust the position of the mask, pinch the nose clamp, and check whether the mask is leaking. It should be noted that: It is best to wear protective acrylic medical gloves when removing the mask to prevent your hands from being contaminated by the mask. After removing the mask, put it in a disposable plastic bag. Ear band masks are relatively simple and will not be introduced.