Salim, you're in Beirut right? Well I stayed with a friend in Chemlan (in the Chouf) who was an MEA 707 flight engineer til about 84 and he said they all used to smoke cigars, and the smoke in the cockpit used to get so thick they'd have to perform the emergency 'smoke in the cockpit' checklist to clear it - opening outlet valves and raising (or lowering...can't remember) the cabin pressurisation! He thought it was hilarious.
Happy new year to all btw.
fly Saha Air 707s daily from Tehran's downtown Mehrabad to Mashhad, Kish Island and Ahwaz