The clip comes from Labyrinth, the 1986 fantasy film in which Sarah journeys through a maze to rescue her brother, meeting creatures including the large, kind-hearted Ludo along the way. Short lines from the film have long been lifted for soundboards because they are short, clear and instantly recognisable to fans. This one has survived mainly as a reaction sound, passed around in memes and edits where a simple comment about a bad smell is funnier than a longer explanation, and it still works because the reference is both nostalgic and immediately understandable.