As stated in Bulbapedia, "Corrosion does not allow the Pokémon with this Ability to damage Steel type Pokémon with Poison-type moves". That is for Steel types, but I'm wondering, if for example, Salazzle attacked Muk with Poison Jab (30% chance of poisoning), can this poison Muk or is this ability only useful for Toxic & Fling?
Note: Fling is a Dark-type move.
Thank you for those who answered!