[M.D. Holloway]

As told by Animal Planet - The smell goes beyond Vulture poop, Hippo poop and Petrel vomit (which is a natural defense mechanism) and some Millipedes from Africa will spray Hydrogen Sulfide as a defense.

According to Animal Plant, the worst smell is from the Skunk - It is not only stinky but the stuff has one compound that bonds to the proteins in hair and fur and another to the water in your sweat glands so it stays with you for days. Personally I don't think it is all that bad and it actually reminds me of summer as a kid.

The worst smelling concoction ever made is the combo of human waste and rotting flesh.

Reminds me of the day I called on a sewage plant in the morning then a rendering plant after lunch - yup, I was popular in the bar that night!