The corrupted wildfire ignores the <a href="/condition/concealed">Concealed</a> condition from smoke.

Smoke Vision

The burning sap that makes up the corrupted wildfire&#x27;s body sputters and pops, ejecting a cloud of acrid that smoke in a 10-foot emanation that lasts for 1 round.
This smoke provides concealment to all creatures within, and deals 1d6 poison damage to any creature that enters or begins its turn in the cloud (DC 20 Basic Fortitude).
A creature that fails is also <a href="/condition/sickened">Sickened 1</a> (or <a href="/condition/sickened">Sickened 2</a> on a critical failure).

Acrid Cloud

When the corrupted wildfire successfully strikes a creature with an attack that deals persistent fire damage, the target becomes <a href="/condition/sickened">Sickened 1</a> (<a href="/condition/sickened">Sickened 2</a> on a critical hit). This condition cannot be reduced below 1 while the creature is subject to the persistent fire damage from the attack, and ends automatically when the persistent fire ends.

Filthy Burn

Corrupted Wildfire (3-4) - chaotic, elemental, evil, fire

The corrupted wildfire ignores the @UUID[Compendium.pf2e.conditionitems.Item.Concealed] condition from smoke.

The burning sap that makes up the corrupted wildfire's body sputters and pops, ejecting a cloud of acrid that smoke in a @Template[emanation|distance:10] that lasts for 1 round.
This smoke provides concealment to all creatures within, and deals @Damage[1d6[poison]|options:area-damage] damage to any creature that enters or begins its turn in the cloud (@Check[fortitude|dc:20|basic|options:area-effect]).
A creature that fails is also @UUID[Compendium.pf2e.conditionitems.Item.Sickened]{Sickened 1} (or @UUID[Compendium.pf2e.conditionitems.Item.Sickened]{Sickened 2} on a critical failure).

When the corrupted wildfire successfully strikes a creature with an attack that deals persistent fire damage, the target becomes @UUID[Compendium.pf2e.conditionitems.Item.Sickened]{Sickened 1} (@UUID[Compendium.pf2e.conditionitems.Item.Sickened]{Sickened 2} on a critical hit). This condition cannot be reduced below 1 while the creature is subject to the persistent fire damage from the attack, and ends automatically when the persistent fire ends.