I only smoke about 4 small cigars a day. I have given up many times, months at a time, so I know I can but as soon as a stress factor steps in I'm back on the dreadful weed. Funnily enough I hardly think about it when flying, even long haul.
As we know the Greeks all smoke. They get into a terrible state. At ATH there is an 'emergency smoking area' as soon as you step off the tarmac.even before immigration.