more about Airports...
Keep passengers in transit area and influence their movements.
Total smoking ban is not a solution for passengers who have taken 5 hours to 15 hours flight and now that the flights are also smoke free zones.

Why to expose smokers to remote smoke rooms which also become smelly and foul and that too very quickly? Smokers should not be isolated, ostracized or tucked away. Provide them with the opportunity to enjoy their need in comfortable conditions.

Smoke Point is a solution that the smoking and the non-smoking passengers would be happy about, as the smokers are satisfied with a comfortable environment and there is no passive smoking for the non-smoking passengers.