Carbon Monoxide is a very dangerous odorless gas that can kill you pretty quickly and without a carbon monoxide detector it's hard to tell if you have carbon monoxide in your house and it can sometimes be too late.
If you don't have a carbon monoxide detector you really should install a carbon monoxide detector in your home so that you can be alerted when the carbon monoxide is detected.
Carbon Monoxide in your house can make you feel very sick and you need to get to fresh air right away if you've been exposed to carbon monoxide.
The Symptoms of Carbon Monoxide Poisoning are, Headaches, Blurred Vision, Confusion, Nausea, Vomiting, Shortness of Breath, Weakness, Dizziness and even loss of Consciousness.
If you suspect carbon monoxide poisoning you need to get out of the house if possible and call 911 immediately because carbon monoxide poisoning can kill you in a short time.
A doctor can take blood tests and breath tests to detect carbon monoxide in your body.