How to maintain Toyota Corolla air conditioner?

Hello, the air conditioning system smells, which means the air duct is dirty and dusty. Another reason is that it is humid in summer, and the evaporation box is easy to breed mold. You can change the air conditioner filter. Corolla's filter is behind the passenger glove box. Then clean the air conditioning duct. When the weather is fine, turn on the blower, pay attention to the warm air, open the window and let it circulate for 20 minutes once a week for two weeks. It is best to put a bottle of faint perfume in the car, and the air inside the car will be particularly fresh. If there is something wrong with the car, ask the car master. 4S shop professional technician, 10 minutes to solve.