What protective measures are there in foggy weather?

Protective measures for haze weather are as follows:

First, masks. Personally, I think that when the PM2.5 index is greater than 100, we need to wear masks.

Second, the air purification of the environment. That is, when the PM2.5 index is large, the working and learning positions are purified by the air purification device.

Third, escape. When pollution is serious, reduce outdoor activities. Go to a place with good air during the break. Don't exercise outdoors, especially when the pollution is heavy.

Fourth, aerobic exercise. Enhance people's function and improve immunity.

Regarding the choice of masks, first choose a reputable brand, such as 3M. Because we can't tell the purification effect of masks, the reputation of merchants is very important at this time. And when we wear a mask, we must seal it all around, because the air will reach a position with low resistance. If the seal is not tight, most air will flow in from here, reducing the purification effect.

From this reason, we know that a mask with only one filter in front is actually of little significance. Because even if its filtering effect is very good, in fact, most of the air flows in from all around.

In addition, masks should be used according to the instructions and replaced frequently. The air purifier is still useful. At least partially useful. But also choose a brand with good reputation. In addition, pay attention to close the window when using. When you leave, you should pay attention to opening the window to get some air.