Dr. George Preti is a ‘stink’ expert, from body odor to farm odor. He studies it all. In the mid-80’s he discovered how male and female armpit odors influence a women’s menstrual cycle. He has also discovered ‘swine slurry.’ You might have heard us talk about it today on the 'Morning Buzz.' It’s a combination of feces, urine, mud and food that all mixed together on a pig farm which he describes as the worst smell in the world. His favorite stink? 3 parts methy and 2 parts hexenoic. It's the same ingredients for armpit odor.