My kids (5 & 7) know I used to smoke, I stopped when I got pregnant with my first but the desire never went away. About two years ago I started vaping and (seriously BAM!) all of my anxiety problems went away. I quit vaping to get pregnant again but that didn't work out and my anxiety returned so I started vaping again (and it worked like a charm... again).
Anyhow, my kids would be horrified if they knew I "smoked". I keep my gear out of reach other than my current PV which I usually keep in my desk drawer. They aren't sneaky and have never ever snooped, but I always worry about WHAT WOULD I SAY if it fell out of my pocket or purse or whatever.
I use a xl titan manual diamond series with a 6ml tank... what the hell could I say that was?! I guess the obvious answer is "none of your business" but I bet there's something more creative than that I could use.
When I used to use carts my go-to answer would be "it's a battery- leave it alone" but my tank device that's topped with a diamond is pretty odd looking.