Is fog poisonous or haze poisonous?

Fog is basically non-toxic, and smog is toxic.

Fog is actually a non-toxic and harmless natural phenomenon, and the formation of smog is mainly the result of a large number of suspended particles in the air and meteorological conditions.

Haze is mainly composed of sulfur dioxide, nitrogen oxides and inhalable particles, which combine with fog to make the sky dark and gloomy in an instant. The abbreviation of particulate matter is PM, and Beijing monitors fine particulate matter (PM2.5), that is, pollutant particles with aerodynamic equivalent diameter less than or equal to 2.5 microns. This particle itself is not only a pollutant, but also a carrier of toxic substances such as heavy metals and polycyclic aromatic hydrocarbons.

Matters needing attention in foggy days

1, try to reduce going out in foggy days, and wear a cotton mask when going out to prevent the respiratory tract from being "polluted" in foggy days. Wash your face and bare skin in time when you come back from going out, or rinse your nose with clear water.

2. Smog weather should be minimized to many places, and poor air circulation in some places can easily lead to cross-infection of respiratory diseases.

3. Morning exercise in foggy days will not only lead to respiratory diseases, but also lead to cardiovascular and cerebrovascular diseases.

4. Drink plenty of water, have a light diet, eat more fresh fruits and vegetables, exercise vigorously and enhance immunity.