Here is a guide on how to remove the status effect curse.
You need a Purging Stone to remove a curse. These can be obtained in a variety of ways:
- Trade Cracked Red Eye Orbs with Snuggly the Crow. You get 2 Purging Stone for every 1 orb given.
- Purchase from the Undead Merchant female for 6000 souls in the Firelink Shrine aqueduct
- Purchase from Black robed man for 4000 souls after the Belfrey Gargoyles in the Undead Burg
- Speak to Ingward in New Londo Ruins. He cures curse, and gives you the key to the lower section of the ruins if you have the Lordvessel.
- Purging Stones can be farmed from Man-Eater Shell's in the Crystal Cave. This is much easier after defeating Seath the Scaleless in turn unlocking the bonfire making for quick farming runs.
- Use the Purging Stone to remove the curse effect.