First of all, the most important thing is where you live. If your city and your city have air quality monitoring stations, then you can check the air quality level. The second is to consider whether the air quality level in your city is good. If your house is well ventilated and fresh air comes in from the outside, you don't necessarily need an air purifier.

But most places in the world, whether in cities or in rural areas, have sources of air pollution that affect us.

Indoor air pollution has once again become one of the main problems that most of us are trying to solve. For personal use, for better health, be sure to use it. A person may have problems with a blocked nose, dry mouth or throat in the morning, change in mucus color, or darkening of the nose.

air purifier is very suitable for removing the dust layer and pet dander at home. And it can improve some people who are prone to allergies, and the recent concern of many people is whether the air purifier can inhibit the spread of the new coronavirus. In the eyes of scientists, air purification products do have the magical effect of inhibiting the spread of the new crown virus. For details, please see other articles for detailed explanations.

Therefore, no matter what, a spare HEPA air purifier at home is only beneficial to us but not harmful.