Being in the same room as a jar of cannabis, obviously, doesn't mean that THC is wafting around. Children—and I guess I would define them as being younger than 13—are not smoking anything. They're not interested in that. As they become teenagers, that becomes something of an issue.
It's not a very attractive thing to be eating. Toddlers are not going to reach into a jar of dried cannabis and start nibbling on it. It's sticky. It's stinky. It tastes bad. It's dry and crispy. It's not something like a cookie, or whatever, that's going to be more attractive, so I don't think we're looking at a massive problem.