I'm not a smoker, but afew times in my life I've had cigars with friends. By had, I mean not inhaling and just trying to gather smoke in my mouth before blowing it out like I'm all cool. The last time, I accidentally inhaled a couple of times. An hour or two later I was vomiting, and the rest of the night I literally could not sit up or else I felt incredibly nauseous.
I won't touch a cigar ever again.