Living in AC causes a sudden change in room temperature and humidity. This causes dryness. This affects the respiratory system. Because of this there are many problems related to breathing. Like- Nasal congestion, frequent sneezing, dry throat. Asthma patients have more trouble.
The door and window of the room remain closed when the AC is on for the whole day. Due to which ventilation is not done properly. In such a situation, we keep breathing in polluted air.
AC recycles the air in the room. Apart from oxygen, there are many other components in the fresh air, in the absence of which suffocation is felt.
This is also the reason for sick building syndrome. In this syndrome, problems like dry cough, bleeding from the nose, infection, vomiting can occur. Overall, whenever your body does not get proper ventilation, you will have many problems.