A total of fifteen firefighters were called out to tackle a fire in a first floor kitchen at a property in Porkellis on Saturday.
Two crews from Helston and one from Falmouth fought the flames in Chapel Hill using one hose reel, while wearing breathing apparatus.
The fire was thought to be accidental and the three occupants were treated at the scene using oxygen by ambulance paramedics.
The casualties were later taken to hospital.
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