When there's a fire, the only "real" effective use to put it out is the Erase particles tool. No matter what, when water is used it just does not get the job done, albeit it does sometimes. It puts the fire out somewhat but, creates useless steam in its aftermath, only to block more water from being used. The element fire extinguisher could be used to put out large-scaled fires caused by thermite, while water is good for small-scaled fires from wood+fire. The small name for it could be called "FE" for "Fire Extinguisher" or better yet "Exti"/"Xtin" for "Extinguisher."
Sorry about the whole "Wrong thread" thing. But "andrewdavidloftus" and "Dr-Nukinstin" are extremely right. The Fire Extinguisher should be like the already existing "Acid" WITH different traits such as to NOT fuel the fire and EAT the fire instead. Just like acid on wood it should slowly erase the particles of the fire without damaging the wood particles. OR better yet it could be more realistic by swapping the fire particles with smoke or white steam particles to simulate a newly put out fire.