Children who get into a car more than an hour after a parent has put out a cigarette still face a threat to their health, a study shows. Experts are warning parents that they are wrong to believe that opening car windows and stubbing out cigarettes before the children climb in will protect them. Julie Barratt, from the Chartered Institute of Environmental Health which carried out the study, said: "Don't kid yourself that because you cannot see the smoke, it is not there doing harm. Children are still inhaling particulate matter long after cigarettes have been put out." -- Daily Express, March 30, 2011