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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 with this curse during a midnight prowl[src]

The Curse of the Bogies[2] (Mucus ad Nauseam),[1] was a curse[2] that gave the recipient a nasty cold[4] and an extremely runny nose[5] that could cause the victim to collapse if it were not treated.[4] The cold was accompanied with constant sneezing.[4] No further casts of this curse had any additional effect on the target, unless the Duo or Tria modifiers were used.[3]

There existed a counter-curse of unknown incantation covered in the Updated Counter-Curse Handbook, Second Revised Edition.[4] Presumably the Pepper-up potion would cure the effects as well, though the Antidote to Common Poisons was notably reported to work.[3]


Harry Potter using this spell against Draco Malfoy in a duel

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.[6]

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.[2] 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.[4]

Known practitioners


"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 practice screen on Pottermore (see this image)
  2. 2.0 2.1 2.2 2.3 2.4 Harry Potter and the Philosopher's Stone, Chapter 9 (The Midnight Duel)
  3. 3.0 3.1 3.2 3.3 Harry Potter and the Chamber of Secrets (video game) - GBC version
  4. 4.0 4.1 4.2 4.3 4.4 4.5 4.6 Harry Potter and the Philosopher's Stone (video game) - GBC version (Defence Against the Dark Arts Class)
  5. "The Dark Forces: A Guide to Self-Protection" spell menu on Pottermore (see this image)
  6. 6.0 6.1 6.2 Harry Potter: Hogwarts Mystery, Year 5, Side Quest "Crushed"
Defence Against the Dark Arts (D.A.D.A.)
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Spells studied at Hogwarts under D.A.D.A.
Aqua Eructo · Boggart-Banishing Spell (Riddikulus) · Cave inimicum · Concealment Charms · Counter-curses · Counter-jinxes · Cruciatus Curse (Crucio) · Curse of the Bogies (Mucus ad Nasuem) · Cursed barrier spell · Densaugeo · Deprimo Spell (Deprimo) · Disarming Charm (Expelliarmus) · Ear-Shrivelling Curse · Everte Statum · Freezing Spell (Glacius) · Full Body-Bind Curse (Petrificus Totalus) · Fumos Duo · Green Sparks · Hex-Breaker· Hex-deflection · Hex Zapper · Homorphus Charm · Human-presence-revealing Spell (Homenium Revelio) · Impediment Jinx (Impedimenta) · Imperius Curse (Imperio) · Imperturbable Charm · Killing Curse (Avada Kedavra) · Knockback Jinx (Flipendo) · Lacarnum Inflamari · Langlock · Limbo Mist anticharm · Nonverbal spells · Patronus Charm (Expecto Patronus) · Protective enchantments · Red Sparks (Vermillious) · Reductor Curse (Reducto) · Salvio hexia · Sea Urchin Jinx · Seize and pull charm (Carpe Rectratum) · Shield Charm (Protego) · Smokescreen Spell (Fumos) · Snake-Vanishing Spell (Vipera Evanesca) · Softening Charm (Spongify) · Stretching Jinx · Tickling Charm (Rictusempra) · Tongue-Tying Curse (Mimble Wimble) · Trip Jinx · Twitchy-Ears Hex · Verdimillious Charm (Verdimillous) · Verdimillious Duo Spell (Verdimillous) · Verdimillious Tria · Vermillious Duo · Vermillious Tria · Wand-Lighting Charm (Lumos)
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