In humans, the medulla region of the brain is mainly responsible for the regulation process of respiration. It is also called the respiratory rhythm centre. The chemosensitive area located near the respiratory centre sends signals across nerve impulses to alter the rate of expiration to eliminate compounds.
Hmm.. This is confusing I know, but i believe the last time i saw a question like this it is the lack of a maintaining homeostasis. A fire can not do this on its own accord.