Quote Originally Posted by Gelatinous Cube View Post
Blowing weed smoke in someone's face won't get them high unless they inhale deeply and hold it for a few seconds, on purpose. And, of course, if you're just near some weed smoke then you have absolutely nothing to worry about at all, ever.

Rude, sure, but not assault. If the law says that's assault, then the law is absurd.
We've already covered how you don't have to breathe deeply and hold it in to get High - even so it is assault, and rightly so. Assault is subjecting someone to unwanted interference with their person, which includes forcing them to inhale something as well as poking them or screaming at them.