I had this happen in DFW airport. I wasn't necessarily "stealth" vaping as the vapor dissipates so quickly that it's not an issue - usually. Well, I finished a cart (not all at the airport, people) and put on another. I can't remember if it was Capp or Peach Cobb but when I exhaled - whoosh! I definitely paused - looked around - saw people staring angrily at me who hadn't been before when seeing what I was doing. I had to wave my hand and promptly put it away. It was disheartening. A little later I HAD to hold it in to make it dissipate before exhaling and really felt bad.