Shiranui saw the Galarian Weezing and checked it out on his Pokédex.  "[i]Weezing: Galar Form, the Poison Gas Pokémon.  This Pokémon consumes particles that contaminate the air.  Instead of leaving droppings, it expels clean air.[/i]"
"[i]Neutralizing Gas, a newly-discovered ability of Koffing and both variants of Weezing.  If the Pokémon with Neutralizing Gas is in the battle, the effects of all Pokémon's Abilities will be nullified or will not be triggered.[/i]"

"[i]A nasty thing to go up against if you're reliant on the abilities of your Pokémon, but it carries a drawback for the neutralising Pokémon in the form of susceptibility to Ground-type moves,[/i]" Shiranui mused to himself.