The cabin vents smell like mold and mildew. It's worse during humid days. I'm pretty sure the AC has something to do with it (since it smells bad when I turn the AC off and keep the fans blowing) but maybe there are are multiple problems that all seem like one. Time doesn't seem to really fix it, and I don't actually use the AC very often.
I've looked this up on many forums and there isn't really a consensus. I've heard spraying with Lysol and cleaning out the entire AC system as two main options. Lysol basically just masks it for a while. Replacing the cabin air filter doesn't really do anything.
What's the best way to fix the cabin air vent smell?