My apologies for not reading most of the posts to this thread, thereby possibly repeating something (which may bear repeating).

Smoking should not be allowed in any enclosed public space. If you want to allow smokers to "participate" in a venue such as a pub, a separately ventilated space should be provided with the entertainment piped in via sound system. If you want to have a pub where smoking is allowed, subject admittance to membership, and subject the membership to the appropriate waivers. It's not rocket science. As far as those who oppose, c'mon, use those last few brain cells wisely.

I ask people who visit my house if they mind if I smoke. After all, I AM a gentleman.