I had a weird vinegar smell coming from the AC on my 2017 Optima. Changed out both the engine and cabin filters which helped - until a few weeks later after it rained pretty heavily. So I looked at other options and found this Armor All Fresh FX vent and duct cleaner deodorizer spray. Had great reviews and figured I’d give it a shot before bringing it in to someone. Well, it got rid of the smell. However I began to notice that running the air and AC now caused this awful tickle / tingling in my throat. Well that turned into a cough, which turned into wheezing, which turned into me borrowing my girlfriends car just so I could recover before an upcoming event all in the course of about three weeks. Girlfriend noticed it happened to her as well when driving it to work the last few days.
I’m bringing it in to the shop tomorrow to see what can possibly be done but I’m wondering if anyone has any ideas of what the hell happened and what I could do to fix it? The instructions say to spray a little less than half the can into the fresh air intake vent with the AC on high and let it run for like 10 mins with the windows open, then go in and spray a bit into the inside vents. I’m wondering if whatever was in the spray loosened up any dust mold and dirt inside and now its just blowing out of the vents every time I turn it on. That or the chemicals in it are sitting on some part of the system and are getting “reactivated” with any moisture when I turn on the air or
AC. But, I really don’t have a good understanding of how the AC system works and whether it would be either of these things. Any help you guys can give me will be very much appreciated. I just want to be able to drive my car without hacking up a lung again.