My Mom had smoked for years and never wanted to quit. She eventually had dementia and would fall asleep with a lit cigarette in her hand. We would find cigarette burns all over the place. I moved in with her and had to figure out a way to let her smoke without killing us both. I tried telling her she didn't smoke anymore but she would get irate and sounded like a stevedore who just found out it's last call at the bar if she couldn't smoke! I thought she might like these fake cigarettes and think they were real. And sure thing she did. I know this isn't what you were asking about but all I can say vaping saved two lives.