That's a good question. My husband and I plan never to smoke in front of the children- we plan to vaporize in private so the smell is not a question. It is something, like our sex life, that we plan to keep private from our kids. I do anticipate a time when we may have to discuss it with them, and hope I will find the right words to explain. There is a book called It's Just a Plant that might be useful for broaching the subject. I grow a lot of plants, and only a few of them are cannabis, so I am hoping it won't be noticable.
If so, I would have to stop growing - but that would expose us to having to buy from dealers, something we really wish to avoid.

Should my husband and I also quit smoking then? If it came to that, I know I could, but it is a fact that using it relieves my depression and anxiety, without side effects, while the pharmacuetical medicines have many unpleasant side effects. I have tried both for many years. Of course, the unfair law hurts many other people who are suffereing much more because they are unable to obtain this herbal relief, and we all know the reasons for its prohibition have nothing to do with any health consequences to users.
I believe that "injustice anywhere is injustice everywhere" and perhaps that is not such a bad lesson for kids to learn. I hope when they are older, they will realize the folly of such laws, and help to change them. But until the kids are older, I will do everything I can do to shield them from our private actvities. It's funny, when I was a kid, both of my parents were knock-down alcoholics, and their behavior was no secret to anyone. I wish I did not have to hide our innocuous use of the herb, but as long as it is illegal, I think it is wisest to keep it a very adult secret.