GASP was a major factor in getting the Virginia Indoor Clean Air Act passed a decade ago. This law established a bare minimum for government and private businesses to follow, allowing any business or government agency to prohibit smoking. The state government still has not come into compliance with the law. For example, the law says that if smoking is permitted, one should not have to pass through smoking in order to reach the no-smoking area. If smoking were banned in the entire lobby of that floor, and indeed in the entire building, it would allow access for everyone, regardless of addictions.
Smokers have temporary nicotine alternatives, like the patch or gum.
But breathing is a necessary function of life.