Hazards of smog
In smoggy weather, the concentration of PM2.5 particles in the air is high, and these particles will enter the human respiratory tract, leading to various respiratory diseases, such as cough, asthma and lung cancer. At the same time, smog will also affect people's cardiovascular system, leading to cardiovascular diseases.
How to prevent smog
The best way to prevent smog is to reduce pollutant emissions. The government should take measures to strengthen environmental protection and reduce industrial pollution. Individuals can also start from themselves and reduce driving and burning coal.
The role of mask
Wearing a mask in foggy days is an effective protective measure. Masks can filter out PM2.5 particles in the air and reduce the number of them entering the human body. At the same time, masks can also prevent the spread of viruses, bacteria and other pathogens and protect people's respiratory health.
How to choose a mask
When choosing a mask, you should choose according to your own needs and the filtering effect of the mask. Masks on the market are mainly divided into medical masks and ordinary masks. Medical masks have high filtering effect and are suitable for special occasions such as hospitals. However, ordinary masks have low filtering effect and are suitable for daily use.
How to wear a mask
When wearing a mask, you should pay attention to the following points:
1. Wear a mask after washing your hands to prevent the surface of the mask from being contaminated.
2. Put the metal strip of the mask on the bridge of the nose so that the mask is close to the face.
3. Open the folded part of the mask so that the mask completely covers the nose and mouth.
4. Avoid frequent contact with the mask when wearing, so as not to pollute the surface of the mask.
5. Wear a mask for a long time and change it every 4 hours.
Maintenance of masks
Used masks should be cleaned or replaced in time. When cleaning the mask, the mask should be soaked in soapy water, rinsed with clear water and dried. When changing the mask, put the mask in a plastic bag and seal it to avoid the mask being contaminated.