Stench

By releasing stench when attacking, this Pokémon may cause the target to flinch.

Level-Up

The following Pokémon can equip this ability after reaching a certain level.
# Pokémon Type Level
9 Houndour
18
10 Houndoom
18
209 Shroomish 18
210 Breloom
18
264 Swinub
54
265 Piloswine
54
266 Mamoswine
54
393 Yamask 10
394 Cofagrigus 10
409 Sarphon
1
410 Aerophagus
1
127 Koffing 18
129 Weezing 18
128 Filtring
18
130 Grimer 1
131 Muk 1
207 Tangela 36
208 Tangrowth 36
444 Carcinodjinn
25
119 Trubbish 1
120 Garbodor 1
??? Deino
10
??? Zweilous
10
??? Hydreigon
10

Natural Ability

The following Pokémon can have this ability when you find them in the wild.
# Pokémon Type
409 Sarphon
410 Aerophagus
130 Grimer
131 Muk
119 Trubbish
120 Garbodor

Hidden Ability

The following Pokémon can have this ability as their hidden ability.
# Pokémon Type
127 Koffing
129 Weezing

Tutored Ability

The following Pokémon can be taught this ability.
# Pokémon Type
348 Fallsheer
9 Houndour
10 Houndoom
63 Venipede
64 Whirlipede
65 Scolipede
177 Goomy
178 Sliggoo
179 Goodra
201 Flabbit
202 Blitzrdrix
209 Shroomish
210 Breloom
264 Swinub
265 Piloswine
266 Mamoswine
16 Murkrow
17 Honchkrow
393 Yamask
394 Cofagrigus
79 Slowpoke
80 Slowbro
81 Slowking
278 Ameoberg
409 Sarphon
410 Aerophagus
407 Roxxik
408 Gravelisk
390 Duskull
391 Dusclops
392 Dusknoir
188 Applin
189 Flapple
190 Appletun
191 Dipplin
192 Hydrapple
299 Munchlax
300 Snorlax
127 Koffing
129 Weezing
128 Filtring
130 Grimer
131 Muk
116 Skrelp
117 Dragalge
207 Tangela
208 Tangrowth
118 Dhelmise
124 Slakoth
126 Slaking
295 Marshtomp
296 Swampert
164 Morelull
165 Shiinotic
444 Carcinodjinn
309 Rolycoly
310 Carkol
311 Coalossal
425 Nemelt
426 Varaflare
427 Komodor
119 Trubbish
120 Garbodor
344 Qwilfish
345 Overqwil
354 Lileep
355 Cradily
366 Exeggcute
368 Exeggutor
367 Exegutower
237 Spudnik
238 Jerusaleye
360 Glimmet
361 Glimmora
??? Anphage
??? Tusgoyf
??? Llurscayf
??? Cranisect
??? Skultulant
??? Xenofuge
??? Inkay
??? Malamar
??? Deino
??? Zweilous
??? Hydreigon
??? Venoph