It works, but it doesn't work much. Formaldehyde is a colorless and odorless irritating gas. When the indoor formaldehyde content exceeds the standard, the human body will have stinging eyes, nose and throat discomfort, and even dizziness and chest tightness. According to the Qi family. Com, the main function of the new fan is to suck indoor air and exhaust it outdoors, and at the same time, suck fresh outdoor air into the room for ventilation. Its main function is to ensure the freshness of indoor air. However, the new fan does not contain the function of in addition to formaldehyde, but discharges the indoor formaldehyde outside, thus reducing the solubility of indoor formaldehyde and improving the indoor air quality. In order to remove indoor formaldehyde, it is not enough to rely solely on the fresh air system. It is also necessary to open the window frequently for ventilation, place activated carbon, and place green plants, such as chlorophytum, radish, cactus, etc., which can effectively absorb indoor formaldehyde and other harmful substances, thus releasing fresh air.