Why was the NCIAA passed?

The ban was passed in order to protect the public from secondhand smoke. Secondhand smoke, also called environmental tobacco smoke, is a combination of smoke from the burning end of a cigarette, cigar or pipe and the smoke exhaled by smokers.

The U.S. Environmental Protection Agency (EPA) reports that secondhand smoke contains more than 4,000 substances, many of which are known to cause cancer in humans. In 2006, the U.S. Surgeon General released a comprehensive report stating that there is no risk-free level of secondhand smoke exposure.