Fire extinguisher
From TARDIS Index File, the free Doctor Who reference.
Fire extinguishers were devices used to put out fires. They usually sprayed cold carbon dioxide, and were sometimes used as makeshift weapons.
The Doctor used a fire extinguisher against a dragon which lived in the forest outside the Pied Piper's castle. (TVC: Challenge of the Piper)
Ben Jackson and Polly Wright used adapted fire extinguishers to spray Cybermen with a chemical potion designed to kill them. (DW: The Moonbase)
The Doctor used fire extinguishers against the Primords. (DW: Inferno)
The Doctor sprayed Slitheen with a fire extinguisher, distracting them long enough for Rose Tyler and Harriet Jones to get away from them. (DW: World War Three)
The Doctor froze a Clockwork Droid which was stalking Jeanne-Antoinette Poisson with a fire extinguisher he got from the SS Madame De Pompadour. (DW: The Girl in the Fireplace)
Clyde Langer and Rani Chandra used fire extinguishers to temporarily disable nanoforms. (SJA: Prisoner of the Judoon)
