If you dislike flying it is easier to cain 9 before you inevitably have to go through to your gate and ultimate death, you keep one to light up if one of the wings falls off mid flight as a last hurrah, alternatively you can eat it to over come some heavy turbulence.
Smoking on a plane? No problem! Just tell the trolley dolly you want to do the same as if you were in the pub, then ask her to open the door so that you can nip outside for a quick fag! HTH