pf2e.fyi
From Pathfinder Rage of Elements, which isn't enabled.

Blight Breath

ITEM 12
Price 350 gp
Usage held in 1 hand
Bulk L

Activate (manipulate)

This foul-smelling bottle contains compressed, noxious fumes. After you inhale the odious gases of the blight breath, you gain resistance 10 to poison for as long as you hold your breath. You can exhale the blight breath as a single action. The resulting spray of noxious fumes deals 10d6 poison damage to each creature in a 15-foot cone, with a DC 29 basic Reflex save

Effect: Blight Breath

Pathfinder Rage of ElementsOGL