A fun one is actually cyanide, which is naturally in the stone (the pit) of apricots. If you dry and powder apricot pits, you'll get mild arsenic poisoning. If

A fun one is actually cyanide, which is naturally in the stone (the pit) of apricots. If you dry and powder apricot pits, you'll get mild arsenic poisoning. If you eat enough of it, you will die.