Harry Potter: "Good – well, look, Neville, we've got to be somewhere, we'll see you later –"
Neville Longbottom: "Don't leave me! I don't want to stay here alone, the Bloody Baron's been past twice already."
Ron Weasley: "If either of you get us caught, I'll never rest until I've learned that Curse of the Bogies Quirrell told us about, and used it on you."
Ron Weasley threatening Neville Longbottom and Hermione Granger during a midnight prowl[src]

The Curse of the Bogies (Mucus ad Nauseam[1]), is a curse that gives the recipient a nasty cold[3] and an extremely runny nose[4] that can cause the victim to collapse if it is not treated.[3] The cold is accompanied with constant sneezing.[3] No further casts of this curse have any additional effect on the target, unless the Duo or Tria modifiers are used.[2]

There exists a counter-curse of unknown incantation covered in the Updated Counter-Curse Handbook, Second Revised Edition,[3] and it is presumed a Pepper-up potion will cure the effects as well.


During the 1988–1989 school year, the Slytherin student Ismelda Murk taught this unpleasant curse to Jacob's sibling on the Hogwarts grounds, in order for her to show her appreciation towards them, for having taught her how to cast various spells beforehand.[5]

Quirinus Quirrell mentioned it to his first year class in 1991. Ron Weasley threatened to learn this curse, then use it on Hermione Granger and Neville Longbottom if they got him and Harry Potter caught roaming the school at night on their way to a duel with Draco Malfoy.[6] In the same school year, Harry Potter fell ill when Peeves used this curse on him. Harry had to look for Updated Counter-Curse Handbook in the library to perform the Counter-curse.[3]


"Ad Nauseam" is a Latin term meaning "to the point of nausea". This implies that the curse makes one produce mucus to the point of them feeling physically ill.


Notes and references

  1. 1.0 1.1 Curse of Bogies practise screen on Pottermore (see this image)
  2. 2.0 2.1 Harry Potter and the Chamber of Secrets - GBC version
  3. 3.0 3.1 3.2 3.3 3.4 Harry Potter and the Philosopher's Stone (video game) - GBC version (Defence Against the Dark Arts Class)
  4. "The Dark Forces: A Guide to Self-Protection" spell menu on Pottermore (see this image)
  5. Harry Potter: Hogwarts Mystery
  6. Harry Potter and the Philosopher's Stone, Chapter 9 (The Midnight Duel)

Defence Against the Dark Arts (D.A.D.A.)
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