Sorry, I should probably clarify then:
PPV Fans introduce more oxygen to the fire, so the fire will burn better and larger, but by using the PPV fan (Correctly) you will remove smoke and heat from the building, allowing you to access the fire easily and quickly, and extinguish it. With the fire burning more brightly, it is also easier to find.
So even though the fire is getting bigger, its aiding us when it does.