Lets see, places I've stealth vaped. Hospital, theme park, college classroom during class, university library all the time (I'm working on a masters degree and it feels like I live at the library), stores many times, pumping gas (try that with a lit cigarette), Dr.'s office, I think that's about it. Once you learn how to keep from blowing clouds of vapor, it's easy to stealth vape and no one's the wiser.