Reeking Havoc. As Professor Utonium won the Chili contest by giving them everybody in Townsville Chili mixed with Chemical X, a critical gas passes out by them creating a Methane Monster stinking up the city. So now it's up to The Powerpuff Girls to stop this monster as Blossom got a giant match that she got from episode two, season one "Insect Inside" and lights it up. Resulting in the Mathane Monster being absorbed by it and becoming stink free.
- The Methane Monster has a strong resemblence to Slimer. A ghost from the Ghostbusters movie.