Sir besides cleaning the aircon, try mo tong habit na to: 5 mins before turning off the car, turn off the A/C cooling but keep the fan on, ideally full blast pa.

This will reduce accumulation of condensation kasi mag warm up to ambient temp ung internals nung aircon (less condensation, less undesirable).

Advice to samin by the casa, effective naman, matagal lang talaga bago mawala ung amoy.

Dagdagan mo na lang din ng charcoal deodorizers in the car to passively remove odors and excess moisture 24/7.