[Passive smoking: from annoyance to disease, an unrecognized risk taken into account]

The I.S. is an uncontestable health hazard. Carboxy-hemoglobin and cotinine are present in biologic fluids of the non smoking people exposed to I.S. The health hazard is important among young children. The excess of lung cancer mortality among non smokers exposed to I.S. is today well known. Legislation and regulation might be completed and applied in public places. Specific measures might be decided and applied in the workplaces. In the family, parents might be educated to take in account the risk of I.S. for their children.