at tokyo airport they had these wikid smoking areas, they where in the main building but they where squared off and seperated by massive walls of air blowing through from the floor to the ceiling, with a massive extraction fan in the roof and in alligh with the floor vents. It made like a self contained room. no smoke could get out and because of all the air you didnt smell at all. it was wikid.

they should just build those and im for them in the uk aswell. theres no physical way the smoke can get out and there damn cool to walk into.