I can definitely relate to this. When I finally gave up smoking a couple years ago, I used the nicotine patches to help quit for good. Sometimes I would forget to take off the patch before I went to bed which would lead to the most ridiculous, surreal, semi-lucid dreams I've ever experienced.  You know, the types of dreams where they get so intense (not necessarily in a bad way) that you jolt awake into a sitting position wondering what just happened as the dream starts to fade...

If I recall correctly, the pamphlet that comes with the patches included a disclaimer which stated that if you begin to have vivid dreams or other sleep issues to simply remove the patch at bedtime. I find it fascinating that nicotine has such a profound effect on dreams.