Mrs. Rnsholme engaged the rm of Saunders and Watts Ltd. to refinish floors in certain rooms of a home owned by her and her husband in Red Deer, Alberta. She told heir. Saunders that she and her husband would be away on vacation and that she would leave a key for the workers with her next door neighbor. She asked Saunders to leave the windows partially open for ventilation and to give the key back to her neighbour who would close the windows when the oors were dry. The Rnsholmes' house was serviced by gas. Among the appliances was a gas stove in the kitchen with a pilot light (a small ame permanently burning which will ignite the burners or oven when the bnmers or oven are turned on) which could be tnmed off manually. The downstairs oors of the house, including that of The dining room, were to be sanded; the dining room was next to the kitchen with no door between the two rooms. After sanding the oors, Saunders and Watts applied a sealer that they had bought from Standard Household Products Ltd. The label on each can of sealer contained the following warning: DANGER-FLAWABLE