Although car perfume is not in great danger of overheating in the car, the invisible injury has seriously hurt you! The space inside the car is narrow and the sealing is good. Especially in summer, car-mounted incense tablets contain some chemical additives, setting glue, etc., which will produce volatile harmful substances after high temperature. Breathing a lot of this air for a long time will cause adverse reactions such as dyspnea, asthma and dizziness. People who stay in such a carriage for a long time are prone to dizziness, so there is danger, but its risk level will be very low. How many windows should you open when you feel dizzy or uncomfortable? Put some outside air in it to neutralize it, and it will taste much better.