First be careful, I recall my grandfather using nicotine as a very effective rat killer, it is a drug and can be highly toxic in larger amounts. As for smoking and ch, I had quit for over a year and had seen no effect on my hits, but I do smoke again now. I just find it as a distraction, kind of focus my mind off the pain for a while, but other than that, I find for myself it really changes nothing with severity, timing, duration in any noticeable way.