What should you be careful not to let the extinguisher's discharge touch?

When using a fire extinguisher, it is important to avoid allowing the discharge to come into contact with your skin. Fire extinguishers utilize various chemicals, and in the case of dry chemical extinguishers, the discharge can contain substances that may cause irritation or chemical burns upon direct skin contact. Additionally, the propellant used in extinguishers can also be incredibly cold, leading to potential frostbite or other injuries.

While it is important to keep the discharge away from other elements such as clothing or the fire source, the primary concern during operation should be the safety of the user, which makes protecting your skin a top priority.