Groups at the Monell Chemical Senses Center in Philadelphia and at Florida International University hope to isolate the compounds that give us each a unique aroma. The problem is that our diet, medications, toiletries and other factors make it difficult to discern natural scent from manufactured odorants. And so, since 1973, George Preti of Monell has collected human odors, recently focusing on the underarm, the mouth and urine.
You won't want to read this while eating. However, as a bonus you'll see what the best job in science is! http://www.popsci.com/science/gallery/2010-03/10-worst-jobs-science -via Digg