You've never heard of scopolamine. It's synthesized from plants, like cocaine. It even looks exactly like cocaine. But unlike coke, it'll turn you into an insane zombie and probably kill you. There's a reason they call it "the Devil's Breath."
Be careful what you touch, and what you eat. Some vegetation can snuff out your life as surely as a venomous snake. There are hundreds, if not thousands, of poisonous plants in the world, and some of them are deadly.