Where does tobacco come into it? I don't have to go out of my way to avoid buying weed with tobacco in it, it's simply not even an option available to me. Also

Where does tobacco come into it? I don't have to go out of my way to avoid buying weed with tobacco in it, it's simply not even an option available to me. Also, I find it really obvious when I've gotten more high than usual, and I find it pretty easy to avoid doing that. I can't imagine that's that unusual.