Cosmic,
That delay was what got me. I'd get dizzy AFTER smoking, only part of the time, so I wasn't correlating it with the smoke. Once I got so dizzy I threw myself into a panic attack, and ended up in the emergency room, thinking it was a heart attack. My heart checked out fine, so they checked for a brain tumor. Thankfully, my brain was fine, too. Well, as fine as it ever was.
I've spent a lot of time in doctor's offices this past couple of months. Now we think I have an inner-ear problem, not caused, but made worse, by nicotine.
Anyway, being a former cigarette smoker, I was not used to nicotine hitting me that SLOWLY!
Well, that or the alien parasite!