Wild Parts (S04E08)

One evening, an unusual scent wafts through the city, captivating the attention of everyone, including Billy. The following night, Mandy, who lacks a nose, teams up with Grim to stake out Billy's house, eager for the phenomenon to happen again. When the aroma returns, the crowd follows it to a nearby shopping mall, where they encounter a "Nasalmancer," a wizard obsessed with seizing others' noses after losing his own. Billy manages to reclaim his nose but ends up slicing it in half, generously offering one piece to the Nasalmancer.