yes gum chewing scum create disgusting litter but at least you can't be effected by passive gum chewing can you! JJ you miss the point, we all know that passive smoking is a minor effect compared to other things, the point is that the disgusting smell is inescapable, smoking and smokers reek, their smoke is unpleasant, why should I breath it in? why should I have my clothes contaminated? If I fart in the pub It creates a temporary smell and some may moan, fair enough but all smokers reek to High heaven 24x7 and seem not to care, if they trod in dogs mess they'd clean it off and get rid of the smell, why then are smokers content to stink all the time? Can someone explain?