Can I open the window for ventilation in foggy days?

It's really chaotic not to open the window in foggy weather. Experts suggest opening the window at least twice a day: after getting up in the morning and before going to bed at night. Because you don't open the window in foggy days, of course, you can be less hurt by PM2.5, but if the oxygen content in the air is not enough, people will feel poor breathing. In the face of life's basic demand for oxygen, the harm of PM2.5 will definitely be ignored. Generally speaking, the time of the day when the air quality is relatively good is before going to bed at night. The air is generally humid in the morning, and people are more comfortable to breathe.

In addition, people will carry microorganisms and bacteria when they go out and go home, people will exhale carbon dioxide indoors, furniture and decoration will release all kinds of toxic and harmful gases, and smoking and cooking will also produce pollutants. If you don't open the window for ventilation, the content of indoor microorganisms and bacteria will gradually accumulate, even exceeding the outdoor air. Therefore, it is necessary to open the window for ventilation for a short time in foggy days. The staff of the provincial environmental monitoring station suggested that when the outdoor air pollution is not very serious, you can open the window twice a day for 20 minutes each time under the condition of still wind. But avoid the dust brought by traffic peaks and strong winds in the morning and evening. In case of continuous pollution, wet towels can be hung near the screen window during ventilation, which can play the role of filtration and adsorption.