If it was all tobacco you would have gotten sick. I tried to dye paper with tobacco and handling the mixture made me nauseous and I smoke a lot. I also filtered a cigarette out of a glass of whiskey and threw up immediately when I drank it. That last one probably doesn't count for much. I just rarely find myself in a situation where I want to admit doing that.
Girlfriend's dad once read that you could keep bugs off your plants with a tobacco tea spray. So he boiled a can of Skoal wintergreen in a pot of water and misted the apple tree. It was years before the tree bore fruit again... And the kitchen never smelled the same.
I don't know how much of it was, but I saw a decent amount of loose tobacco at the bottom of the bag and a smoked cigarette with chinese lettering on it. I think I mostly drank the real tea on the top and probably didn't even get to the tobacco. The company said they had a disgruntled employee that did it. They aren't in business anymore.