A Pokémon with Stench has a 10% chance of causing the opponent to flinch when hit by a damaging move (provided the ability-bearer strikes first as usual).
In Generations 3-4, Stench has no effect in battle.
Outside of battle
If a Pokémon with Stench is leading the party Pokémon, wild Pokémon are only half as likely to appear.
|Helps repel wild POKéMON.|
|The stench helps keep wild Pokémon away.|
Black 2/White 2
|The stench may cause the target to flinch.|
|X/Y||The stench may cause the target to flinch.|
Pokémon with Stench
|088||Grimer||Sticky Hold||Poison Touch|
|089||Muk||Sticky Hold||Poison Touch|
Stench as a hidden ability