I don't have AC on this truck, and it's the old pool knob style controls. If I'm sitting still, and I have the heat going, the closest thing I can describe is the smell is kind of like acetone.
I looked this up online and it said something about refrigerant. But, as far as I'm aware I don't have AC on this truck
1985 Volvo white cabover, 300 cummins, straight 9
Any ideas would be appreciated. Thank you