Two crews from Aylesbury attended a fire in a fourth-floor flat.
Firefighters used two sets of breathing apparatus and one hose reel jet to tackle the fire.
The fire was extinguished and the property was ventilated. Gas monitoring was carried out following the incident, with all readings found to be clear.
One woman suffered the effects of smoke inhalation. Firefighters administered oxygen at the scene before handing her into the care of South Central Ambulance Service.
The incident was brought under control and crews remained on scene to complete safety checks and ventilation of the property.