Now that I think about it, it's kind of silly for me to be so worried about stealth vaping. I mean, the ashtray smell I carried around with me screamed "I'm a smoker" for years, even if I wasn't actually smoking in front of anyone. That was also something I was really sensitive about. If I had to be somewhere where I was going to be around a lot of people I didn't know, I'd always try to take a shower and brush my teeth before I went. If I didn't have time to, I'd always try to stand a few feet away from people so they couldn't smell me. Well, unless I was at a bar/club or with my friends.
On my way to work one time, I drove by one of my coworkers who was walking to work. He still had several blocks to go and it was 4 in the morning, but I didn't pull over to offer him a lift because I was too embarrassed about the way my car smelled. I hated feeling like that.