To use a fire extinguisher safely, ensure a safe exit route, keep others at a distance, know the fire source, and use the correct extinguisher.
When using a fire extinguisher, ensure you have a safe exit route behind you, keep others at least five feet away, make sure the fire is small and confined, have the correct type of extinguisher readily available, and know the source of the fire. Knowing these factors is crucial for effective and safe extinguishing of fires.
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