1. Proper use of humidifier can avoid respiratory diseases, but excessive use will promote respiratory problems;
2. The humidifier needs to be cleaned regularly, otherwise microorganisms such as molds in the humidifier will enter the air with the vapor mist and eventually be inhaled into the respiratory tract;
3. The humidifier needs to be moderate. If the air is too high, chest tightness and dyspnea will occur.
4. The purifier shall be placed in a position that does not block the driving vision, and the connecting line shall not interfere with the steering wheel control.