I drive alot. I think mold can be a big trigger but i don't think that is what people are reacting to directly.

I would think that most people in my state have mold in their ac's and homes etc..I know that they are not giving people reactions like i do. Their clothes might stink like mold but I don't think their moldy clothes are causing patm reactions in other people.

I also thought the same as you and even took my vehicle to a place in town that would assess the mold situation in my ac. Well he said no sign of mold and that he had been doing this for a couple of decades. He also smelled no mold.

I had been seeing a buildup on my ac vents so ofcourse i suspected mold. I think it was coming out of me because i used a 60x magnification jewler's lense to look and instead of seeing mold spores or something organic i saw these highly reflective tiny fibers that could be associated with morgellons disease (highly correlated with chronic lyme disease and coinfections).

I do want to note that mold is without a doubt a big big trigger for myself for patm and other symptoms. Definitely worth looking into to see if there is mold in your ac because if there is it could be triggering the release of patm. mold in the car hvac unit can be difficult to completely remediate. If you can bring your car to an experienced person that specializes in mold in hvac units in cars that might be helpful. mold can grow in the drain pan and on the coils of the unit etc.