What Causes a Sour Smell Inside the Car?

[LeAlexandra]

Reasons for a sour smell inside the car: The air conditioning system has not been cleaned for a long time, leading to the accumulation of dirt and dust in the evaporator and air ducts, causing the air filter to mold: Seat covers, floor mats, etc., have not been replaced for a long time: Odors emitted by the original car decoration materials. In-car air pollution refers to poor air quality inside the car due to lack of ventilation, car body decoration, etc. The pollution sources mainly come from the car body itself and decorative materials, among which toxic substances such as formaldehyde, xylene, and benzene have the most severe consequences. When purchasing a car, choose a brand that has passed quality inspections. Wear gloves while driving or opt for environmentally friendly, high-quality seat covers. Additionally, try to open the windows frequently for ventilation while driving, and wash hands promptly after driving or exiting the car.