I tried a home remedy that seems to have worked. I bought a can of Lysol spray started the car selected normal AC turned the fan on hi, cracked the windows and sprayed the Lysol in the cowl vent. I did this for about 20 minutes. So far it has worked.
I'm dealing with this on a Ford Ranger pickup we bought recently to fix up and resell. The previous owner bought it new and smoked cigars. The interior literally reeks of cigar smoke, to the point that my wife won't ride in it. With the windows down, the truck airs out a bit, but the minute it has to sit with the windows up, the smell comes out all over again. A local detailer here in town recommended a product called A/C Line Deoderizer. Advance Auto and probably Autozone carry it; it's in a lime green and white can. I believe you do like Marty said and spray it in the vents while the A/C is running. I haven't tried it yet, but I plan on giving it a shot soon.
« Last Edit: September 08, 2014, 11:35:36 AM by drummingrocks »
--1965 fastback, 289/4-spd, built Feb. '65 at Dearborn
--1965 convertible, 289/4-spd, built Mar. '65 at Dearborn
--1966 GT fastback, 289/4-spd, built Dec. '65 at Dearborn
--1966 coupe, 200/3-spd, built Dec. '65 at NJ (in the family since 1968)
--1967 coupe, 289/C4, built Dec. '66 at NJ