TWO people were treated for possible carbon monoxide poisoning last night (Mon) at a house at Worlington Cross, Instow. Fire crews from Bideford and Barnstaple were scrambled to the scene at around 11.20pm after a woman reported a carbon monoxide detector activating inside her two-storey property. Wearing breathing apparatus, crews entered the building and discovered a small amount of carbon monoxide detected around an open fire in the ground floor living room. As a precaution, fire crews requested the ambulance to attend for the woman and a boy in the property for the possible effects of carbon monoxide poisoning. Fire fighters removed the contents of the hearth to the open air.