RY4 has a combination of several flavors, like a smoky tobacco, caramel, and vanilla. I'm not sure what else, but it doesn't taste like tobacco to me. Yes, it's non-menthol, and I'm not sure if they have it available in menthol or not.
I'll mention that my friend smokes menthols (she's staying here for a couple of days), and since she arrived last night, she's been vaping the mixture that I vape all the time -- and she says she likes it enough to just vape that from now on. Last night, she tried some menthol liquid that I have (bought in early Sept at a local smoke shop, while waiting for my juice order, and that's the only bottle he had available), and she only took a couple of hits from it and has vaped my mixture of RY4, caramel, nut mix, and apple, with about 22% Glycerin added, ever since. She loves it like I do, and she's only smoked two cigarettes since yesterday at 4:00 pm. One was because I told her to go ahead and have a cig, which caused me to about gag, with a little shortness of breath immediately and a burning down my esophagus and lungs. Then she had one a couple of hours ago when she went to the store. She said the smell was terrible, and I have a feeling that will be her last cigarette.
I think if your boyfriend and Mom try vaping just once, they'll love it and will be able to quit smoking. I'm still amazed at how easy it was to quit smoking, especially since my intention when ordering the first starter kit in early September, I only did that to try it and never dreamed I'd never want to smoke again.
You've probably read here that the tobacco flavors don't taste like the tobacco we've become accustomed to with cigarettes.