Board Thread:Off Topic / Fun and Games/@comment-30160565-20180131204301/@comment-29602226-20181028130929

Breathing Carbon Monoxide provokes a basic, primal fear. Even people who are normally unable to sense fear due to brain damage enter a state of absolute panic when the CO content in the air they are breathing rises above certain level.

It seems fear provoked by suffocation (or at least by breathing CO) originates in a different, more primitive area of the brain that other kinds of fear...