from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To exhibit the flehmen response, i.e., to draw back the lips, allowing scent to reach the Jacobson’s organ, an auxiliary olfactory organ found in many animals.
German flehmen. (Wiktionary)
To curl one's lip to sniff at pheromones is 'to flehm', so I've been flehming here at the office.