Why do you have to wear a mask in foggy weather?

Wear a mask in foggy days, and it is economical and practical to use a medical surgical mask, which will not increase the respiratory burden.

Anti-smog professional mask can replace filter paper and also play a protective role. From the economic and practical point of view, it is suggested to use medical surgical masks to prevent haze weather.

Medical surgical masks are somewhat similar to ordinary disposable masks, but the materials are different. Although there is a nose clip to help the mask fit on the bridge of the nose, the mask is not in close contact with the face. The inspiratory resistance is 50 Pa, the expiratory resistance is 29 Pa, and the breathing is relatively smooth. Medical surgical masks belong to medical devices and can be bought in hospitals and pharmacies. Medical surgical masks will be marked on the package, and the price is much cheaper than N95 masks.

Wearing a mask, it is difficult to have both smog prevention and comfort. Pi Xiaolin suggested that when the weather is bad, people with respiratory diseases or the elderly had better stay at home, close the doors and windows and don't go out. Children should not wear a mask for too long, the size of the mask should be suitable for children's face, and the breathing resistance of the mask should not be large.