From 905fec92e9655822d050b6062828237efb417245 Mon Sep 17 00:00:00 2001
From: Dean <69436131+emdeann@users.noreply.github.com>
Date: Wed, 26 Feb 2025 13:39:08 -0800
Subject: [PATCH] [Bug] Fix Neutralizing Gas not Deactivating on Faint and
 Capture (#5423)

---
 src/data/ability.ts                     |  3 ++-
 test/abilities/neutralizing_gas.test.ts | 27 +++++++++++++++++++++++++
 2 files changed, 29 insertions(+), 1 deletion(-)

diff --git a/src/data/ability.ts b/src/data/ability.ts
index dcbaa4026f4..8c4b2ba380a 100644
--- a/src/data/ability.ts
+++ b/src/data/ability.ts
@@ -6877,7 +6877,8 @@ export function initAbilities() {
       .attr(PreLeaveFieldRemoveSuppressAbilitiesSourceAbAttr)
       .attr(UncopiableAbilityAbAttr)
       .attr(UnswappableAbilityAbAttr)
-      .attr(NoTransformAbilityAbAttr),
+      .attr(NoTransformAbilityAbAttr)
+      .bypassFaint(),
     new Ability(Abilities.PASTEL_VEIL, 8)
       .attr(PostSummonUserFieldRemoveStatusEffectAbAttr, StatusEffect.POISON, StatusEffect.TOXIC)
       .attr(UserFieldStatusEffectImmunityAbAttr, StatusEffect.POISON, StatusEffect.TOXIC)
diff --git a/test/abilities/neutralizing_gas.test.ts b/test/abilities/neutralizing_gas.test.ts
index 8b9c374f1cc..a0612078e64 100644
--- a/test/abilities/neutralizing_gas.test.ts
+++ b/test/abilities/neutralizing_gas.test.ts
@@ -2,6 +2,7 @@ import { BattlerIndex } from "#app/battle";
 import { Abilities } from "#enums/abilities";
 import { ArenaTagType } from "#enums/arena-tag-type";
 import { Moves } from "#enums/moves";
+import { PokeballType } from "#enums/pokeball";
 import { Species } from "#enums/species";
 import { Stat } from "#enums/stat";
 import GameManager from "#test/testUtils/gameManager";
@@ -135,4 +136,30 @@ describe("Abilities - Neutralizing Gas", () => {
     expect(game.scene.arena.getTag(ArenaTagType.NEUTRALIZING_GAS)).toBeUndefined();
   });
 
+  it("should deactivate when the pokemon faints", async () => {
+    game.override.ability(Abilities.BALL_FETCH)
+      .enemyAbility(Abilities.NEUTRALIZING_GAS);
+
+    await game.classicMode.startBattle([ Species.FEEBAS ]);
+    game.move.select(Moves.SPLASH);
+    expect(game.scene.arena.getTag(ArenaTagType.NEUTRALIZING_GAS)).toBeDefined();
+    await game.doKillOpponents();
+
+    expect(game.scene.arena.getTag(ArenaTagType.NEUTRALIZING_GAS)).toBeUndefined();
+  });
+
+  it("should deactivate upon catching a wild pokemon", async () => {
+    game.override
+      .battleType("single")
+      .enemyAbility(Abilities.NEUTRALIZING_GAS)
+      .ability(Abilities.BALL_FETCH);
+    await game.classicMode.startBattle([ Species.MAGIKARP ]);
+    expect(game.scene.arena.getTag(ArenaTagType.NEUTRALIZING_GAS)).toBeDefined();
+
+    game.scene.pokeballCounts[PokeballType.MASTER_BALL] = 1;
+    game.doThrowPokeball(PokeballType.MASTER_BALL);
+    await game.phaseInterceptor.to("TurnEndPhase");
+
+    expect(game.scene.arena.getTag(ArenaTagType.NEUTRALIZING_GAS)).toBeUndefined();
+  });
 });