What needs to be replaced when there is an odor in the car's air conditioning?

[VanKaleb]

When there is an odor in the car's air conditioning, it is necessary to regularly replace the cabin air filter. The relevant introduction of the cabin air filter is as follows: 1. Function: The cabin air filter can separate solid impurities such as dust, pollen, and grinding particles in the air; it can absorb harmful gases in the air such as moisture, soot, ozone, odors, carbon oxides, SO2, CO2, etc., providing fresh air to the cabin, preventing passengers from inhaling harmful gases, and ensuring driving safety. 2. Classification: There are two types of cabin air filters, one containing activated carbon and the other also containing activated carbon; the cabin air filter with activated carbon not only has the above functions but also has the effect of absorbing a large amount of odors.