How can someone kill themselves using carbon monoxide?

Carbon monoxide poisoning is a common cause of death in many other countries. It is a toxic colorless gas with no taste or smell and it doesn't have any irritants so you don't know you're getting poisoned. Exposure of CO at 100ppm (parts per million) can be fatal to the central nervous system and heart. It is produced from the burning of gas/propane powered tools, machinery, or car exhaust e.g. and without proper amounts of oxygen to oxidize into carbon dioxide. Has DEATH been on your mind for awhile now?Last month you asked about Barry Loukaitis, Why if I may ask you?