Template:Breedlist
|-
| style="background: #FFF; font-family:monospace,monospace" | 0316
| style="background: #FFF; text-align: center;" |
| style="background: #FFF" | Gulpin
| colspan="2" style="background:#9141CB; text-align: center;" | Poison
| style="background: #FFF" | Koffing, Weezing Slugma, Magcargo
|-
| colspan="6" | Bold indicates a Pokémon which gets STAB from this move. Italic indicates a Pokémon whose evolution gets STAB from this move. *Indicates Pokémon that can only learn the move through chain breeding.
|}
|}
Template:Breedlist
|-
| style="background: #FFF; font-family:monospace,monospace" | 0316
| style="background: #FFF; text-align: center;" |
| style="background: #FFF" | Gulpin
| colspan="2" style="background:#9141CB; text-align: center;" | Poison
| style="background: #FFF" | Koffing, Weezing Slugma, Magcargo
|-
| style="background: #FFF; font-family:monospace,monospace" | 0434
| style="background: #FFF; text-align: center;" |
| style="background: #FFF" | Stunky
| colspan="1" style="background:#9141CB; text-align: center;" | Poison || style="background:#624D4E" align="center" colspan="1" rowspan="1" | Dark
| style="background: #FFF" | Flareon Houndour, Houndoom Torkoal
|-
| colspan="6" | Bold indicates a Pokémon which gets STAB from this move. Italic indicates a Pokémon whose evolution gets STAB from this move. *Indicates Pokémon that can only learn the move through chain breeding.
|}
|}
Template:Breedlist
|-
| style="background: #FFF; font-family:monospace,monospace" | 0092
| style="background: #FFF; text-align: center;" |
| style="background: #FFF" | Gastly
| colspan="1" style="background:#704170; text-align: center;" | Ghost || style="background:#9141CB" align="center" colspan="1" rowspan="1" | Poison
| style="background: #FFF" | Koffing, Weezing Slugma, Magcargo Hitomoshi, Ranpuraa, Shandera
|-
| style="background: #FFF; font-family:monospace,monospace" | 0316
| style="background: #FFF; text-align: center;" |
| style="background: #FFF" | Gulpin
| colspan="2" style="background:#9141CB; text-align: center;" | Poison
| style="background: #FFF" | Koffing, Weezing Slugma, Magcargo Hitomoshi, Ranpuraa, Shandera
|-
| style="background: #FFF; font-family:monospace,monospace" | 0434
| style="background: #FFF; text-align: center;" |
| style="background: #FFF" | Stunky
| colspan="1" style="background:#9141CB; text-align: center;" | Poison || style="background:#624D4E" align="center" colspan="1" rowspan="1" | Dark
| style="background: #FFF" | Flareon Houndour, Houndoom Torkoal
|-
| colspan="6" | Bold indicates a Pokémon which gets STAB from this move. Italic indicates a Pokémon whose evolution gets STAB from this move. *Indicates Pokémon that can only learn the move through chain breeding.
|}
|}
Slugma melts its body into a lava-like puddle and crawls under the opponent. It then opens a hole in its body like a volcano and releases a black smoke from it.
Despite it being a Template:Type2 move, Koffing and Weezing are the only Poison-type Pokémon that can learn Smog naturally, with Gulpin, Stunky, and Gastly learning it through breeding.
In fact, the other Pokémon that can learn it naturally are either pure or part Template:Type2.