To probe deeper, Université de Montréal Ph.D. candidate Morganne Masse decided to research a little-known syndrome related to the perception of smell, called olfactory reference syndrome (ORS).

Lesson plan: Olfactory fatigue With the help of canine specialist Jacky Experton, the team trained German shepherds Thor and Nykios to distinguish cancerous rags from non-cancerous ones.

Kondo, who has studied the relationship between fatigue and viruses for many years ... Some of the virus reaches and infects the olfactory bulb, the center in the brain connected to the sense ...