You can blow a fan if you have influenza A, but you should avoid blowing it directly and limit the amount of time you spend blowing it. Influenza A is a viral infectious disease, similar to the common cold in the early stages, some people can be accompanied by digestive symptoms. Therefore, there will be fever and other manifestations, if the ambient temperature is high, but not conducive to the body’s heat dissipation, so you can blow the fan, should avoid blowing directly, in order to prevent aggravation of the condition. If sweating more, the body heat will be reduced, this time should avoid blowing the fan. If the ambient temperature is too high, you can also turn on the air conditioner to cool down, you should pay attention to avoid setting the temperature too low, so as not to aggravate the discomfort. In addition, you should also open the windows frequently to maintain indoor air circulation, disinfect and wear masks, and do a good job of preventing infectious diseases. If you have a fever, you should go to the fever clinic of the hospital in time, and take regular medication as prescribed by the doctor after the nucleic acid test.