I have certainly witnessed the ill effects of a cigar knocking someone on their ass -- especially when coupled with more than a few drinks. When we host and people imbibe, I'm always reluctant to allow a non-smoker to take a cigar. On more than one occassion I've had people people kneeling before one of my procelain thrones for hours as they purge and recover -- the uninitiated always get "the speech," but I always leave the decision to them -- a policy I should rethink as the failure rate seems to be approaching 50%.