Fire Extinguishers
You should always be aware of the dangers of the incorrect use of firefighting equipment. This is true for all firefighting equipment, including fire extinguishers.
A fire extinguisher should never be used to prop open a door. It should always be fixed to the wall, and it should be checked monthly by a service technician.
Most modern fire extinguishers are developed to deal with many different fire scenarios. Fire extinguishers can be filled with powder, water additive, foam, or carbon dioxide.