Rather surprisingly this is the sprite of joss-sticks.  It actually produces some of the pleasantest smells to be found in the World of Olfaction, but it is, nonetheless, an unpleasant little creep.  It has a deep knowledge of the nose and an understanding of scent that would make its fortune in the perfumeries of Paris, but it is insufferable rude and has as about as much social grace as a three-month old pizza.
It refers to people who light joss-sticks as "jossers" and affects to despize them as "pathetic hippie left-overs of the Sixties' drugs craze."