What are the causes of air pollution inside a car?

[RoseMarie]

Sources of air pollution inside a car mainly include the following: 1. The new car itself: The interior of a car is mainly composed of leather, fiber, and various engineering materials, and these materials require the use of harmful substances such as formaldehyde and benzene during production. 2. Car decorations: In the market, car decorations come in various types and materials, with varying quality, and even some 'unbranded' interiors are mixed in. 3. Car air conditioning: For example, when the engine is running, it produces carbon monoxide, gasoline volatiles, nitrogen oxides, etc. 4. Smoking inside the car: If the driver or passengers smoke, it will greatly increase the concentration of pollutants such as volatile organic compounds, carbon monoxide, and dust. 5. Car washing: When washing the car, if cleaning agents or dry cleaning agents are used inside the car and ventilation is not properly managed afterward, it may cause secondary pollution.