Main Question or Discussion Point
Say there is a chair soaked in gasoline. If someone is to walk in the room the smell is immediate if the chair was lit on fire the liquid gasoline would ignite the chair. However, what about the particles that constitute the smell of it? Why don't they ignite as well? What is the nature of the properties of things being able to be smelled but the actual things being smelled are not necessary the flammable contents.