I smoked openly for years in front of everyone. Then I quit and stayed quit for a couple of years and my family, friends, acquaintances, etc. were all thrilled. So when I slipped and started having the occasional one that became more than just an occasional one, I didn't want to tell anyone. I only smoked outdoors or in my home office, which is a whole separate building from my house and no one goes in except me. I kept a couple of shirts in my office and when I entered, I would slip off the shirt I was wearing and stick it in a ziplock bag, then put on one of my "smoking" shirts. When I finished smoking, I would use mouthwash, spray my hair with perfume made specifically to remove odors from hair, and slip my non-stinky shirt back on. I wore vanilla perfume and people, including strangers, often told me I smelled like cookies baking. No one, including family and friends, ever said they smelled smoke.
I wasn't sure I was fooling anyone, but after I had been vaping for about a year, I decided to tell my husband. My youngest child had left for college and I thought it would be nice to be able to vape on roadtrips with my husband or even while sitting watching a movie in the evening. He was totally supportive. Once I came clean about vaping, I asked him if he had known that I was smoking again and he said he hadn't had a clue. I asked him if any of my grown daughters had mentioned that they smelled smoke on me or thought I was smoking again (they would totally say something to him or me if they had suspicions) and he said not even once.
I still don't vape in front of anyone I know except him. I have my own reasons for this. I don't think my daughters would be upset that I'm vaping, although they would have been very upset about me smoking again. I keep it to myself because I have very few things in life that are just mine. I have four daughters who help themselves to my clothes, shoes, jewelry, books, etc. because that's just the kind of relationship we have. Because I've had medical problems that have resulted in four major surgeries in the last six years, my daughters have been in the room while doctors and nurses discussed my weight, my bathroom habits, my diet, and every other last detail of my life. Vaping is just for me. I don't want to discuss it with them, I don't want to justify it, I don't want to share it. They have many parts of their adult lives that I'm not privy to and this is the one thing that I keep just for myself. Maybe I'll change my mind someday and decide that hiding it from them isn't worth the effort anymore, but for now, I like having something that just my husband and I share knowledge of away from the kiddies. Besides, it's so much easier hiding vaping then smoking. Since I already smell like cookies baking, no one thinks anything of the smell of my vape. My daughters have walked in the room right after I've vaped and said how good it smells. They think it's the candles I have sitting around unlit.
I shared this story once before and had a lot of pro-vaping members respond that I needed to vape openly in order to help make vaping more mainstream. I had others say that I was kidding myself if I thought I was hiding my smoking from anyone. And some made negative comments about my role as a mother if I felt the need to hide things from my daughters. I don't judge others for how they vape, where they vape, or why they vape. I don't know your life and you don't know mine. This is what works for me. I do vape when I'm out in public by myself or with my husband. I have a great relationship with my daughters and speak with each of them several times a week. I don't demand to know every detail of their lives and don't feel a need to share every detail of mine with them. That doesn't make me a bad mother, just an adult who has a life separate from her role as a mother.
For me, hiding smoking was because I knew there would be a negative backlash. I'm not worried about that with vaping. I just choose not to share my new hobby.
To the OP, thanks for starting this thread. It's an interesting one.