I don't think there are any precautions available--other than clean air.

I don't mind if smokers inhale, as long as they don't exhale. ;)

In August, Ottawa becomes smoke-free in public places like pubs and restaurants.
About time.

I don't do gigs in smoky bars anymore, and I don't miss it. Once the new laws are in place, I'll have lots of places to play--yay!