What is one risk associated with using water extinguishers on certain fires?

Using water extinguishers on certain types of fires, particularly those involving flammable liquids or electrical equipment, can exacerbate the situation. This is due to the fact that water is not effective on flammable liquid fires (class B fires) because it cannot extinguish the burning liquid, which may float on top of water and continue to spread the fire. Similarly, using water on electrical fires (class C fires) poses a significant risk, as water is a conductor of electricity and can lead to electrical shock or further ignite the fire. Hence, employing water extinguishers in these scenarios can not only fail to extinguish the fire but can also create a dangerous environment, causing the fire to spread and escalate, making it more challenging to control.