From Pathfinder Adventure Path: Hellbreakers, which isn't enabled.

Blinding Spray

HAZARD 4

Stealth +12 (trained)

Description A bladder of powdered peppers is secreted in a compartment above the door.

Disable DC 20 Thievery (trained) to disable the blade that bursts the bladder

No Orphans Allowed

Trigger The door is opened

Effect The powder sprays in a burst that fills the square in front of the door and all adjacent squares in the orphans' dormitory. Any creature in the area must attempt a DC 21 Reflex save.

Success The creature is Dazzled for 1 round.

Failure The creature is Blinded for 1 round.

Critical Failure The creature is blinded for 1 minute.

Pathfinder Adventure Path: HellbreakersORC