The problem of air pollution inside cars has received increasing attention, because the space inside the car is relatively closed and the air circulation is poor, resulting in high concentrations of pollutants, which directly affects the health of drivers and passengers. Air pollution inside cars mainly comes from the following aspects:

1. Harmful gases released by interior materials: Plastics, rubber, fabrics, paints, insulation materials and adhesives used in automobiles contain volatile organic compounds (VOCs), such as benzene, toluene, formaldehyde, xylene, etc. These Substances are slowly released in the small space inside the car, causing the air quality inside the car to deteriorate. The materials used in the interior decoration of luxury cars are more complex and may release more pollutants.

2. Engine emissions: When a car engine burns gasoline or diesel, it will produce harmful gases such as carbon monoxide, nitrogen oxides, and hydrocarbons. These gases enter the vehicle through the vehicle's ventilation system.

3. Air conditioning system: If the car air conditioner evaporator is not cleaned and cared for for a long time, a large amount of dirt will adhere to the interior, producing harmful substances such as amines, nicotine, and bacteria. Especially in humid climate conditions, these pollutions will be released when the air conditioner is used. substances, causing the air quality inside the car to deteriorate.

4. Human body's own pollution: Carbon dioxide produced by the breathing of people in the car, as well as skin secretions and carried bacteria, etc., will also affect the air quality in the car.

5. Cross-contamination: Different passengers may bring contamination to each other, such as bacteria, viruses, odors, etc.

Countermeasures to prevent and control air pollution in cars include:

- Use an air purifier: An air purifier can remove microorganisms, pollutants, odors and harmful gases in the air to keep the air in the car clean.

- Regular ventilation: Open windows regularly for ventilation while driving, or use external air conditioning circulation to promote air circulation in the car.

- Clean the air conditioner regularly: Clean the air conditioning system and interior to reduce the growth of mold and bacteria.

- Choose low-VOCs materials: When purchasing a new car or decorating the interior of the car, choose environmentally friendly, low-pollution materials.

- Healthy driving habits: Reduce smoking in the car and avoid using strong-smelling chemicals.

Paying attention to the air quality in the car is crucial to protecting the health of drivers and passengers.