I'm not sure about unintended consequence MM - enough countries had done it for the effects to be foreseen. I know the forum birthday drinks would have been very different if smoking was still allowed. In other countries the onset of colder weather has meant increased use of gas heaters (which is another argument but not one for here maybe) but in Ireland for example where several years have passed since the introducion of the ban, my family of heavy smokers continue to go to pubs but smoke far less. The pub trade in Ireland is in decline generally and while many publicans would lay the blame at the door of the smoking-ban, the trend had been downward for some time