* We won’t go into the obvious and discomfiting details about poop’s variables. But if you’ve become a fan of VOCs by this point of the book, you will be excited to know that the poop of healthy humans has been found to contain 381 volatile organic compounds. That’s a lot compared to, say, blood, which has 154, but way less than breath, which has 872. The lesson here is that just because something smells bad to us doesn’t mean it has more VOCs.