Mannino and colleagues provide a snapshot of the consequences of exposing asthmatic children to tobacco smoke. Because of the inherent methodological features of their data, the snapshot is not completely focused as many patients had to be eliminated from the analyses because of missing data points, and very extensive subsetting was performed. Nevertheless, the photograph is clear enough to remind us of one of the common observations from studies of addictive behavior: addicted parents may harm not only themselves but also their children.12Notably, in a recently published study13of children seen in a Cincinnati emergency department because of asthma exacerbations, 41% of the parents identified themselves as cigarette smokers. The data of Mannino et al, combined with those from other reports, provide evidence of the harm associated with involuntary smoke inhalation among children, especially children with asthma. These observations support the contention that the addictive properties of cigarette smoking may be profound. Indeed, recovery from tobacco addiction is notoriously difficult, even for highly motivated smokers.14 Because the consequences of parental smoking impact not only the smoker but the smoker’s children, it behooves us all to work diligently with parents who smoke to lower or eliminate tobacco smoke from their homes and cars.