Is Exposure to Secondhand Smoke a Form of Child Abuse?

Should exposing children secondhand smoke be considered a form of child abuse? And if so, should those who expose their children to secondhand smoke be punished accordingly? Movement is afoot in certain quarters to ban smoking in cars when kids are present. Before you make a decision on the issue, how about some factual information?

Cigarette smoke contains a toxic blend of carbon monoxide, nicotine, and roughly a few thousand other chemicals, none of which have so far been proven to make kids perform better in school. In fact, the majority of the chemicals found in cigarette smoke have been found to cause things that make learning more difficult: things like dying from cancer and heart attacks.