The idea is to not eat, drink, or smoke anything with a face....
I dont like the idea of using things that are dead in my grows... like fish or bone...
Guano's will do a better job at providing available nutrients than bone meal..
Now the problem is that its hard to know how or what a guy used to grow the stuff your smoking unless your growing it yourself...
So i wouldnt be too difficult on the whole thing...
Just make sure that if you grow, u dont use anything you dont believe in.... Grow with your heart... and not with your mind.. Your mind is what is thinking "oooooo That high Phosphorus bone meal sounds lovely for my plants, The taste and weight should be great"
The taste and weight will be great if you put your heart into it... thats pretty much it...
So dont worry about it, You probably smoked a whole lot of hydro grown chemical weed, without even realizing it... just like everyone...
Take it easy