Peter,Same here. i had a similar relationship with my Ex, She smoked in collage but quit before we got married. We always had a Dominant / submissive relationship and had always incorporated our fetish for smoking into our play. We had found after several years of marriage that we both missed that aspect of our play, be it me just lighting Her cigarettes to full ashtray service and cigarette torture.
i never smoked and still don't but during our "Play Nights" my Wife would use a similar gag to the one you described, She would also put lit cigarettes into my nostrils until all three burned down almost to there filters. i then would be made to lick the ashes off the floor and also eat the flitters.
Another incredibly cruel thing She would do was place Her ashtray with four or five lit Newport 100s in it under my face while i was hog-tied. i was required to keep the ashtray very clean with my tongue. If i put out a cigarette as i licked the ashtray She would re-light the cigarette i put out and also put a fresh one in the ashtray. After about 30 minutes She would have about ten or twelve cigarettes burning in Her ashtray just inches from my face as i feebly tried to keep the ashtray clean. As far as keeping the cigarettes lit, it is almost impossible, the tears and liquid coming from my eyes and nose would just keep putting them out. i would then be forced to clean the ashtray still hog tied.
Also, i feel no urge to smoke...