Basically, I quit smoking about two weeks ago. Two or three days after quitting I noticed that things would smell like smoke (e.g. my hands, a pen, etc)... Olfactory hallucinations, becuase it really didn't smell that way or like anything.
Now, after seeing someone smoke at lunch, that I notice little waves of smoke when someone moves, like they just exhaled smoke. This has happened three times, but stopped now. I was just wondering if this is possible, or my mind is playing tricks on me.