What are Jone and Mary talking about?

M:What are you doing, Mary?
W:I am cooking the dinner.
M:Look! The Capital Building caught on fire today.
W:What? How about the people in the building?
M:More than 220 people were killed and the building was destroyed.
W:It must have taken the fire fighters a long time to put it out.
M:Yes, they spent about five hours putting it out. Hm, what a strange smell !
W:Oh, I forget the food cooking on the fire!
M:Be quick!Turn the gas off. You should be careful next time, otherwise, you’d have our house on fire!