Characters / Denizens of the Underworld
Though there are inevitably some less than pleasant notes scattered around the Primary Odors' world, all the really bad ones are reserved for here. This is a hell populated by cacodemons who rain terror onto everyone's nose - except when they don't. Some pleasant smells like jasmine and spearmint involve these underworld characters. And, strangely, while most of the sulfur-smelling ones belong to the OR2M and OR2T subfamilies, so do some of the sweet/fruit smellers we met before. There is no obvious difference in the proteins to explain why some 2Ms and 2Ts go for sweetness while others go for stench. It is another mystery.