What is smog?

As the name implies, it is composed of fog and haze, fog is composed of small water droplets suspended near the ground, and haze is composed of particles such as dust in the air. Haze is a general term for the excessive suspended matter content in the atmosphere, and it is also harmful to the body to go out in haze weather.

Harmful substances in the air will be inhaled into the body, which will do great harm to the lungs. People who have respiratory diseases themselves can easily cause acute attacks when they go out in foggy days without taking protective measures. Reduced visibility in foggy days will also affect traffic safety.

Extended data

Smog can make people with respiratory diseases such as asthma, chronic bronchitis and chronic obstructive pulmonary disease feel short of breath, chest tightness and other discomfort, which may cause lung infection or acute exacerbation. Diabetic patients are more likely to catch a cold because of their weak resistance. PM2.5 is very destructive to patients with chronic diseases such as cardiovascular and cerebrovascular diseases, which will increase the heart burden of patients with heart disease and induce cerebral infarction.

It is best to reduce going out in foggy days, and it is recommended to wear a mask with good protective effect when going out. However, not everyone is suitable for wearing a mask.

Patients with respiratory diseases, especially those with dyspnea, artificially create respiratory disorders after wearing masks. Patients with heart disease, emphysema and asthma are not suitable for wearing masks for a long time. It is suggested that patients with chronic diseases avoid going out shopping and participating in various outdoor activities in the morning fog, drink plenty of water and pay attention to rest. If you feel unwell, go to the hospital as soon as possible.