How to wear a mask correctly?
Standard wear
If there is a gap between the mask and the face, airflow will flow to the gap when the person breathes. Dust, droplets, aerosols, etc. attached to the virus can enter the body through the gap with the airflow, causing infection. Therefore, it is necessary to standardize the wearing of masks. When wearing the mask, first unfold the arc reserved layer of the mask. Fix the mask on the face with ear straps, and completely cover the mouth, nose, and jaw. Then firmly pinch the metal strip above the bridge of the nose to make it close to the bridge of the nose. Finally, adjust the air tightness of the chin. If necessary, the lanyard can be knotted from the back of the head to improve the tightness. Avoid touching the outside of the mask with your hands during the entire wearing process.
Distinguish the pros and cons
The disposable medical masks that everyone wears are divided into three layers. The outermost layer is a water blocking layer, the middle is a filter layer, and the inner layer is a moisture-absorbing layer. The hygroscopic layer can absorb the moist gas exhaled from the mouth and nose to keep the mask dry. If the mask is worn upside down, the breath exhaled from the nose and mouth cannot be effectively absorbed. The mask is easy to get wet and loses its protective effect. Before wearing the mask, the nose clip side of the mask should be facing up and the dark side facing out. If there is no difference in color of the mask, it can be judged according to the folds of the mask, and the folds are downwards outward.
