Neutralizing Gas

Not in Pokémon ChampionsGen VIII

Game

Scarlet & Violet

While this Pokémon is active, Abilities have no effect.

Who has it: 2 Pokémon
Showdown rating

How it works in Gen IX

While this Pokémon is active, Abilities have no effect. This Ability activates before and other Abilities take effect. Does not affect the As One, Battle Bond, Comatose, Disguise, Gulp Missile, Ice Face, Multitype, Neutralizing Gas, Power Construct, RKS System, Schooling, Shields Down, Stance Change, Tera Shift, Zen Mode, or Zero to Hero Abilities.

“While the Pokémon is in the battle, the effects of all other Pokémon's Abilities will be nullified or will not be triggered.”
In-game text, The Teal Mask

Changes over time

How Neutralizing Gas changed from game to game, newest first.

Gen IX
… System, Schooling, Shields Down, Stance Change, added: Tera Shift, Zen Mode, or ~~dropped: Zen Mode~~ added: Zero to Hero Abilities.

Descriptions: Pokémon Showdown’s for each generation, and PokéAPI’s notes on the changes they don’t show. Champions: Pokémon Showdown.

Good to know

Can't be copied or swapped by: Role Play, Skill Swap, Trace, Receiver and Power of Alchemy, Entrainment, Transform.
Activates when it enters battle.

Works with or against it

Ability Shield

Pokémon with Neutralizing Gas

Koffing

Weezing