Mar 20, 2014 04:07 PM EDT
Human Nose Can Sniff Out Over 1 Trillion Smells: Odors from Fragrant to Acidic
Ernest C. Crocker and Llyod F. Harrison were two American chemists. In 1927 they published a paper noting that the human nose can tell the difference between four different odors (fragrant, acidic, caprylic, and burnt) allowing them to detect over 10,000 different scents.