Question: how to clean bacteria out of your car air conditioning system?
Answer: Step 1Blast the AC. Start by engaging the AC and turning the fan to its highest setting—make sure the re-circulation option is off, as you want outside air coming through the vents.
Step 2Roll Your Windows Down. ... 
Step 3Spray Lysol into the Outside Air Vents. ... 
Step 4Let Your Vehicle Vent.