I already do, Nutty - who wants to sing in a smoky club room anyway. No problem for me, and I agree with the ban.

Some of the places I've been to will have to spend serious money to get rid of the smells that have seeped into the fabric of the building, upholstery, carpets, curtains; so you might not notice the difference straight away there, until they do refurbish and repaint. But it'll be worth it.