"Parental smoking" refers to the act of smoking cigarettes or other tobacco products by a person who is a parent to one or more children. Full definition
The effects of parenting hardly varied by parental smoking status or adolescent gender. (academic.oup.com)
But since former parental smoking did not eliminate risk, other aspects of the family environment or genetic factors probably play a role. (sciencedaily.com)
Interestingly, the beneficial effect of parental smoking cessation was largely negated if the other parent continued to smoke, particularly if that smoking parent was the mother. (academic.oup.com)