I experienced the phantom smell but not of cigarette smoke but of Pine Sol. When I was cleaning houses, a client asked me to use Pine Sol and I obliged but when I opened the bottle, I hit the floor. When I came to, I had to go home and the smell was so overpowering that I had to drive w/all the windows open in the dead of winter. I was sick in bed for 3 days b/c of it and I smelled and tasted Pine Sol for two weeks after that. It just finally went away on its own but I never want to experience that again. I feel for you, truly.