I own a Toyota Azura which I traded in a Sportivo for , and both cars had the same problem!!! if you want to rid the car of the bacteria from the car you
have to use an antibacterial
solution such as Glen 20!!!! what you do is lift your bonnet turn car ignition on and run your aircon ,with out starting your car,, while it is running you apply short bursts down the air intake which you will hear where it is coming from by the noise of air from the fan until you can smell the glen 20 inside you car .. close the bonnet turn ignition OFF close doors leave for about an hour (and Bobs your uncle) you may have to repeat some times in the future but that is all Toyota do on their services only they dont use glen 20 which in my book is much more effective anyway , try it
Dave Scully oh by the way remember to turn off your air con 5 or 6 minutes before arriving home to dry out the condensor