Why does my car AC blow cold air with a foul odor when I first start it?

A foul odor when you first start your car AC is caused by mold and bacteria on the damp evaporator releasing their strongest smell as airflow begins, then fading as the system runs. This startup odor is the classic sign of microbial growth, which thrives in Miami's humidity because moisture lingers on the evaporator long after you park. A clogged cabin filter and a slow-draining condensate tube make the problem worse by holding even more moisture. The lasting fix is replacing the cabin air filter and applying an antibacterial evaporator treatment that kills the source. A helpful habit is turning the AC compressor off but leaving the fan running for the last few minutes of your drive to dry the system. At Motoro Cars, our ASE-certified technicians eliminate the odor at the root. Serving Miami from Wynwood and Doral, call (786) 634-2002 or book at motorocars.com.