From Pathfinder Adventure Path: Bastion of Blasphemies, which isn't enabled.

Middenworm Infestation

HAZARD 5

Stealth +13

Description A dead body seems to ripple and bulge, as if something inside were shaking.

Disable DC 23 Medicine or DC 26 Thievery to carefully cut into the corpse and vent the worms harmlessly in a safe direction

Worm Burst

Trigger A creature jostles or touches the infested corpse

Effect The corpse bursts open, spraying hundreds of middenworm larvae in a 20-foot emanation. Creatures in the area must attempt a DC 25 Reflex save.

Critical Success The creature is unaffected.

Success The creature is Sickened 1 and takes 2d8 piercing damage from worm bites.

Failure The creature is sickened 1 and takes 4d8 piercing damage plus 2d6 persistent piercing damage as the biting worms latch on.

Critical Failure As failure, but Sickened 2 and the persistent piercing damage increases to 4d6 persistent piercing damage.

Pathfinder Adventure Path: Bastion of BlasphemiesORC