One person's thiol, a whiffy compound often encountered in wine, especially in pungent sauvignon blanc, is another person's "sweaty armpit just out of the gym".

Indole, an intriguing compound which can be both attractive or repugnant depending on its intensity, is found in the florals of jasmine, but also in the faeces of humans and pigs. It's been more attractively described as "dank flowers in a vase". This I know, as I've heard these descriptors employed on the Australian Wine Research Institute's advanced wine assessment course.