'It is not the match and the inflammable materials, the flaming firebrand or any other inflammatory agent which the arsonist uses to start the fire which causes danger to life, it is the ensuing conflagration which occurs as the property which has been set on fire is damaged or destroyed. When [whether] the victim in the bedroom is overcome by the smoke or incinerated by the flames as the building burns, it would be absurd to say that this does not result from the damage to the building.'