In South and Southeast Asia, the tradition has been to [use fossil fuel like coal and wood for] indoor cooking and heating
A history of cardiovascular disease in male relatives (father, brother, or son) was found to be a protective factor for smoking intensity, with adult smokers with a history of cardiovascular disease in their male relatives smoked 15% fewer cigarettes than those who did not have such a history (95% CI 0.7710.951)
Keep Your Hands Busy If smoking is a habitual hand motion, keeping your hands occupied can reduce the urge
Barrett SP, Boileau I, Okker J, Pihl RO, Dagher A (2004)
However, no significant effects were obtained