pf2e.fyi
From Pathfinder #153: Life's Long Shadows, which isn't enabled.

Exhale Poison

ACTION
Activity 2 actions

Frequency once per hour
Requirements You were within the area of an inhaled poison within the last minute; Iron Lung

You sharply exhale the poison that previously surrounded you in a 15-foot cone. Creatures in the area are affected by the poison; the poison's DC and effects are unchanged.

Pathfinder #153: Life's Long ShadowsOGL