In addition to flame sources, fumes can be ignited by the sparks from switches in air compressors, refrigerators or even light switches. Test electric garage door openers. Use a two-inch thick piece of wood at the bottom and close the door. If the door does not reverse, disable it and fix or replace the opener as soon as possible. It is a colorless, odorless and tasteless gas that gives no signs of its presence.
Carbon monoxide can rapidly build up in any indoor area.
Physical symptoms of carbon monoxide poisoning include confusion, headache, dizziness, fatigue and weakness. A person can be quickly overcome and eventually die if they don't get medical help. Carbon monoxide poisoning can cause permanent brain damage, including changes in pers nality and memory. Operate internal-combustion engines indoors for only short periods of time and make sure the area is very well ventilated. Even small engines can produce deadly levels of carbon monoxide.