Milo the Fireman is a 2000 episode of Tweenies.
Milo and Jake are sitting down with Bella, Fizz, and Doodles. When suddenly, the fire bell rings, the Tweenies yell: "FIRE! FIRE!" so Milo and Jake put on their uniforms and slid down the pole. So they get onto the engine, they say goodbye and get some fresh air.