As for your misrepresentations of WHO/CDC data, according to PubMed, a total of 8,646 real, peer-reviewed studies reached the alternate conclusion. Nobody in their right mind doubts that smoking causes lung cancer -- no causal link has ever been more conslusively established by more scientists doing more research.
"Nobody in their right mind doubts that smoking causes lung cancer -- no causal link has ever been more conslusively established by more scientists doing more research."
Then simply provide the reason why some non smokers get lung cancer and not all smokers get lung cancer.