After a couple weeks of hot humid weather in Southern California, my car developed an odd smell when starting the fan or A/C. It smelled like vinegar of all things. I did a little on-line checking and decided that the most likely cause was mold/mildew. I get a lot of drainage under my car with the A/C running so I don't think the tube was blocked. The cause was most likely condensation on my evaporator had become a home for mold/mildew/bacteria/whatever. I stopped by the neighborhood auto store and got a A/C duct cleaner ($8). I followed the instructions and sprayed the cleaner in the exterior and interior vents and ran the A/C with the fan. Within a few minutes the smell was gone and it was just as nice the next morning. Hopefully I got it. That was easy!

 

When was the mircofilter changed last?

 

In March. I change it every year. I get a charcoal activated one.

 

^Good

 

I knew a security guard who got pissed off at one of his coworkers and sprayed MACE into the exterior vents of this guys car, He said he was crying from the fumes on his way home.