
Sleeping in a car with the air recirculation off is not safe. Here is some information about sleeping in a car with the air conditioning on: 1. Safety Hazards: When the car is stationary, the exhaust fumes produced do not get blown away by the wind as they would when the car is moving. These fumes can easily be drawn into the car by the air conditioning system, leading to carbon monoxide poisoning. Additionally, if the car remains sealed for a long time, the oxygen level inside will gradually decrease, which can cause suffocation and death while sleeping. 2. Precautions: If you must sleep in a car, it is best to turn on the air conditioning's fresh air mode. This mode draws outside air into the car, helping to maintain air circulation inside.


