hopefully far, far away from me
It's not the first time I've heard this, but this seems like the best place to ask: why? It doesn't have a direct effect on you (their dose isn't your dose). I'm sure you know this, so is it that it bothers you too much? Suppose I smoke weed or even meth in front of you; is there any impact for you really? I see this statement a lot but I'm not sure what kind of thinking is behind it.