Will going out in foggy weather in Chongqing do harm to your health?

Water vapor in the air condenses into tiny water droplets suspended in the air, which is called fog. There are unexplained solid particles floating in the air, such as smoke and dust, which is called smog. Fog often contains harmful air pollutants, solid or liquid particles, etc. , collectively referred to as smog. If these particles are equal to or smaller than 2.5 microns, they are called PM2.5, which is generally harmful to human body. In particular, PM2.5 is inhaled into lung tissue and cannot be discharged, which will cause long-term effects, although it will not be felt for a while. Therefore, outdoor activities should be avoided in foggy days, and air purifiers can be installed indoors if conditions permit.