Bad smells

Depends what he has. On my 2003 Volvo no warning light was present

 

Maybe run the fan, even if not using the A/C just to keep it dry and dump something in the vents to kill the mold. Probably find something to kill the mold at an auto parts house.

 

If the a/c pee tube is plugged up I can see water building up in there. Needs to make sure thats open first.

 

I would bet the batteries. One of them is boiling itself. Not good to breath in and don't cause a spark next to it cause they can blow up. Replace all of them not just the bad one. Shut the truck off and take the battery cover off. One of them will sound like boiling water.

 

You're probably right on that; water can't drain and the mold starts.

 

You only smell it through your a/c cause your sucking outside air I bet.

 

Supercool Odor Control/Neturalizer, 3 oz.Aerosol 27002 | Zoro.com

I used to buy deodorizer bombs, whatever Walmart or the parts store had in stock. And set them off right by the intake for recirculation. Seems like every time I swapped trucks the previous driver was a smoker.

 

Learn something new. I don't know about the boiling water. Remember a closed container or vessal that contains water hot enough to boil will reach a certain ... problem and not boil.

That is where you Mr, Darwin will help things along prying off covers that you don't need to be doing.

 

Had a driver back stab me, so I dumped a big bottle of cheap K-Mart perfume into the vents. Didn't solve the problem, but it made me feel better. His wife worked in the office and she wasn't too happy about women's perfume smell in his truck.

 

HE HE HE HEEE... oh lord have mercy on me. Im on the floor laughing. That's awesome... a line from Kahn comes to mind, from hate I spit at thee...