Emergency responded to a hazardous material incident in High Wycombe on Sunday.
Fire crews from Beaconsfield, Bicester and High Wycomble along with police and ambulance service were called to Station Road at just before 2pm.
The fire service said the incident involved a white powdered substance.
A women was passed into the care of the South Central Ambulance Service.
The firefighters used two sets of breathing apparatus and gauntlets when entering the property.
The incident was left in the hands of Thames Valley Police.

Bucks Local Plan: Aylesbury MP raises concerns
Bucks Council launches final consultation on draft Local Plan
Aylesbury coach begins Commonwealth Games journey with Team England
Small Fire Temporarily Closes Aylesbury Recycling Centre
Spend a night under the stars at Waddesdon Manor to help tackle homelessness in Buckinghamshire
Police carry out co-ordinated searches targeting organised crime across Bucks
Newly installed raised table in Amersham to be replaced












