First of all, when you start using the air conditioner in the middle of the year, you should remember to clean it first to prevent dust and strange smell.
The air conditioning room should open windows frequently for ventilation and keep air circulation to reduce indoor air pollution.
In the air conditioning room, you can put a basin of water or humidifier beside people to prevent people from discomfort caused by drying.
Don't turn on the air conditioner too low. The temperature difference between indoor and outdoor is too big. It's easy for people to get heatstroke when they come out of the air conditioner room.
Don't stay in the air-conditioned room for a long time. You can eat more fruit.
At ordinary times, we should strengthen physical exercise, breathe more natural air and stay away from air conditioning.