How to deal with the odor from car air conditioning?

[VanMartin]

You can find a sunny day to park the car under the sun, set the air conditioning system to the warm air mode, then turn the fan to the maximum speed, and open all doors and windows to let it air out. Also, check if the air filter's mesh is clean or needs replacement. Cleaning agents for the air conditioning ducts can be purchased by the car owner.

[StFelicity]

I used to smell a musty odor every time I turned on the AC, which was really annoying. After some troubleshooting, I found the most common causes are a dust-clogged filter or mold growing on the evaporator in the AC system. Fixing it isn’t hard: first, buy a new filter and replace it yourself—it’s super easy, just open the glove compartment. If the smell persists, try an AC cleaner spray; apply it through the air intake and let the fan blow for a while. Doing these regularly can significantly reduce odors. Don’t forget to turn off the AC but keep the fan running for a few minutes before parking to dry out the ducts and prevent mold. Prevention is far better than dealing with worsening issues, and it saves money on professional cleaning. Avoid masking the smell with air fresheners—that’s just a temporary fix.