Turning on the air conditioner when you have a fever may aggravate the cold and fever, so it is best not to turn on the air conditioner when you have a fever. If you have a summer cold or a wind-heat cold during the hot season, you can stay in an air-conditioned room at a suitable temperature, but avoid blowing on the air conditioner. In addition, you should also avoid blowing directly on the electric fan. If you blow on the air conditioner or electric fan, it will make the pores close tightly, which will prevent the dispersion of this heat and moisture, and will aggravate the cold caused by heat and moisture. So when you have a fever, try not to turn on the air conditioner, and even if you do, you should avoid blowing the fan directly. In addition, if you have a wind-cold cold, you should avoid turning on the air conditioner. When you have a cold, if you turn on the air conditioner, it is likely to aggravate the cold situation and cause the cold to worsen.