This really depends on your favorite e-liquids, but I've been using my vape gear in non-smoking hotels, resort rooms, and rental cars without issue.
There's only a couple of juices I've used that leave any kind of lingering smell. Most of them dissipate quickly without any residuals.
That's part of the beauty of vaping imo. People can say what they want, but the facts are, that if they don't see you doing it, they'll likely never know you have done it! :D