If you're a smoker, then not so much. In order to smoke at Heathrow, for instance, I have to go landside (sometimes through passport control) and back, with no

If you're a smoker, then not so much. In order to smoke at Heathrow, for instance, I have to go landside (sometimes through passport control) and back, with no problem, sometimes more than once if a flight is delayed for a long time.