I can't answer your question, but as a 2-pack a day smoker, I can add my 2 cents.
I smoke during half time on the huge ramp/section under the original Dawgzilla-tron on the bottom level. At times I linger longer into the 3rd quarter, to change our mojo. But that's it.
As to vaping, often they're former smokers trying to quit, but not always. In my experience people who use e-cigs are less inclined to see their habit & residual "2nd hand smoke" as obnoxious & unhealthy for others because they are better than us dirty smokers.
Clove cigarettes, black & milds et. al., & vapor exhaust smell horrible & at times make me nauseous. This shouldn't be possible. I shouldn't have much smell or taste left given my own disgusting habit. However, I know my habit is disgusting. I know I should quit. I know others find it intolerable.
Those who "vape" seem to think everyone should enjoy their birthday cake flavored abomination of inhalation. Marlboro Lights aren't hip anymore. The Marlboro Man is dead. Literally & figuratively.
In summarization, I'm a heavy smoker & had she been close to my seats; either I would've had words with her, or I would've lit up myself to prove a point, or that chrome ***** would've been crushed under the heel of my boot.
Rebel Bruiser-esque rant over.