I think that it was a "Vanguard" charter [Airline escapes me] from ,I think, "Bristol"? to Brussels????.
I remember doing a "walkround" [Pre Flight] at Malaga {jump seat, friend of Captain, pre 9/11} and there was this 30 foot plus black , fading to medium brown, stain coming from the air conditioning exhausts {A320}. It was nicotine...... If I hadn't stopped smoking, then that would have been a certain start......
bb