I have taken the housing off the bottom of the unit for the blower. You can see most of the evaporator but I wanted to give it a really good clean. Its been treated by the dealer, but still smells and my chest isn't getting better, so I want to blast it with some anti-bacterial thingy.
If I can't get better access, I'll have to do it from here and use an aerosol or something. Traeting the system doesn't seem to work, it wants a good blasting.