Is the fog dirty or clean?

In addition, there is another explanation that fog is water vapor condensate suspended at low altitude near the ground. In busy suburbs, these condensate-water droplets often contain many harmful chemicals, floating dust, pathogenic microorganisms and so on in automobile exhaust. Especially in the foggy weather for several days in a row, because the cold air is not strong and there is no obvious airflow, various pollutants in the near-surface layer continue to accumulate. According to the detection of the health department, there are a considerable number of F pathogens in the droplets. It is a multicellular microorganism, which has the ability of autonomous movement infection. It can not only cause disease alone, but also make people sick together with other germs. Therefore, it is best not to do morning exercises outdoors in foggy days, especially on the roadside, and not to do strenuous exercise between open spaces and buildings, so as to avoid inhaling too many harmful substances and inducing tracheitis, pharyngitis, conjunctivitis, rhinitis, various allergic diseases and cerebral hemorrhage. In addition, don't do sports such as running in foggy days, because when doing these activities, the oxygen consumption in the body will increase, and breathing will inevitably deepen and accelerate. At this time, because there is more water vapor in the fog, it will hinder the gas exchange of alveoli and cause dizziness and other discomfort due to lack of oxygen in the brain; At the same time, due to the strengthening of muscle and bone activities during exercise, the heat production in the body increases obviously, and it is necessary to sweat and release body heat. However, the air humidity is high in foggy days, and sweat is not easy to evaporate, which is not conducive to skin heat dissipation and will make people feel sultry and uncomfortable. In addition, before sunrise, more carbon dioxide accumulates in the shade at night. When there is fog, the wind is weak and it is difficult for carbon dioxide to dissipate. It is not appropriate to exercise in the shade of the park in the morning.

Satisfied, please adopt.