At 12.12pm on Tuesday (18) two crews from Cambridge were called to a fire on Cody Road in Waterbeach.
Firefighters arrived to find a fire on the first floor of a house. Wearing breathing apparatus they extinguished the fire using a hose reel and cleared the smoke using a positive pressure ventilation fan.
Two casualties were taken to hospital by ambulance for smoke inhalation.
The crews returned to their station by 2.20pm.
The cause of the fire was accidental.