Can you do it without wearing a mask in the face of smog?

It is best to wear a mask in foggy days to reduce going out.

Smog weather seems mild, but it actually contains more than 20 kinds of fine particles and toxic substances harmful to human body, including acid, alkali, salt, amine, phenol and so on. , as well as dust, pollen, mites, influenza virus, tuberculosis, pneumococcus and so on. Its content is dozens of times that of ordinary atmospheric water droplets.

Haze is harmful to human health. Because the diameter of fine powdery floating particles in smog is generally below 0.0 1 micron, they can directly enter bronchi and even lungs through the respiratory system. Therefore, the biggest impact of smog is the human respiratory system, and the diseases caused are mainly concentrated in respiratory diseases, cerebrovascular diseases, nasal inflammation and other diseases. At the same time, in the haze weather, the air pressure decreases, the inhalable particulate matter in the air suddenly increases, the air mobility is poor, and the diffusion speed of harmful bacteria and viruses to the surrounding area slows down, resulting in an increase in the virus concentration in the air and a high risk of disease transmission. So you still have to wear a mask.