Are you a chain smoker? Besides harming your own life you may also be exposing your kids to second-hand smoke which can increase their risk of death due to chronic obstructive pulmonary disease (COPD) in adulthood researchers have warned. The study found that those who have lived with a regular smoker throughout their childhood have 31 per cent higher mortality from chronic obstructive pulmonary disease. While second-hand smoke exposure (10 or more hours/week) as an adult was associated with a 9 per cent higher risk of all-cause mortality a 27 per cent higher risk of death from ischemic heart disease