When you have a cold, it is best not to turn on the air conditioner. When you turn on the air conditioner, the air in the room will be too dry, and when the air is dry, it will increase the chances of respiratory infections and aggravate the symptoms of respiratory infections caused by the cold, which can lead to sore throat or coughing and coughing, so you should not turn on the air conditioner during the cold. When you turn on the air conditioner, it is easy to get cold, which can aggravate the symptoms of cold or trigger the symptoms of heavy sensation. The air conditioner is not cleaned in a timely manner, and it is easy to breed bacteria, mold or viruses, which can aggravate the symptoms of a cold or induce respiratory infections. Therefore, it is better not to turn on the air conditioner during the cold, rest more, drink more water, and eat more fresh fruits and vegetables rich in vitamin C, which can promote the recovery of the cold. If the symptoms of cold are serious, you should also use cold medicine for treatment, such as aminophenol pseudo-lax dispersible tablets.