Mothra is a fictional monster from the 1961 Japanese thriller film of the same name. She is portrayed as a colossal, mutant moth who attacks Tokoyo, Japan. She appeared in the Evil Con Carne episode "The Smell of Vengeance".
In "The Smell of Vengeance", Hector fired a Stink Ray at Japan. When the aroma covered the entire country, Godzilla was disgusted by the stench and complained. Mothra saw him smelling the stink and laughed at him, saying "He who smelt it, dealt it.", jokingly implying that he farted.