Second hand smoke is just a known health risk.

Secondhand smoke is the third leading cause of preventative death in the United States. For every eight smokers that smoking kills they take one non-smoker with them.

Preemption was repealed in January of this year. Lifting the preemption allows communities to vote whether or not they want to be smoke free.

Looking past the short-term price risk inherent in essentially any asset -- real or financial -- there is little doubt that housing represents a good long-term investment. Since the mid-1950s, real home prices in Canada have increased, on average, just over two per cent per year … . Of course, home ownership also carries intrinsic value beyond its investment potential, including lifestyle benefits.

There is an environmental and health risk that could occur.

It provides an important public health benefit, there's no other OTC alternative to CFC epinephrine inhalers, and the environmental risk from the release of CFCs from Primatene is small and justified given the benefit it provides.