Wemba was lying, he said that he didn't smoke, but that isn't true. He used to smoke alot of cigarrests and joints in the 70s and 80s (you him often see doing it in those documentaries and rare interviews). Then when he started with world-music he tried to stop, but from the late 90s he started smoking cigars. I remember him once saying in 2014, that his daugthers took his cigars away, because he had difficulties with stopping smoking it.