Carbon monoxide is an odorless, colorless gas that has no smell. It is a byproduct of combustion and can leak from gas furnaces, stoves, and other appliances that burn fuel. Because carbon monoxide has no smell, color, or taste, it is impossible to detect without the right equipment. Every homeowner needs to be aware that this gas is an unseen risk, the exposure to which may prove fatal. Symptoms of carbon monoxide poisoning include headache, dizziness, feeling sick or being sick, feeling weak, confusion, chest and muscle pain, and shortness of breath. With high levels of exposure, it may produce vomiting, blurred vision, shortness of breath before inducing loss of consciousness; and occupants may have only minutes to evacuate the house before they fall unconscious and are poisoned to death. If you suspect a carbon monoxide leak, it is important to immediately seek help and evacuate the area.