First post here. I’ve been enjoying lurking for a while. My son bought a 2000 TJ back in July and I have since bought it from him. I’ve been spending the last month or so getting it fixed up to my liking. Last major problem for now is the smell. When we originally brought it home it smelled like the previous owner smoked in the Jeep and hauled lots of oily and greasy things. We thoroughly cleaned the inside multiple times. For the past 2 months the doors and all windows have been off (soft top only) and the smell seemed to be almost gone. I recently put doors and windows back on and when I turn the heat on it's like that original stink when we brought it home. So I guess my question is, Is there any way to get the smell out of the duct work for the heater ( no A/C ) without removing it? I would appreciate any suggestions.