Are carbon monoxide and fire detectors the same?

No. Carbon Monoxide Detectors and Fire or Smoke Detectors are not the same. Carbon monoxide is a colorless, odorless, and tasteless gas that is slightly less dense than air. Incorrectly installed, poorly maintained or poorly ventilated household appliances – such as cookers, heaters and central heating boilers – are the most common causes of accidental exposure to carbon monoxide. ... blocked flues and chimneys – this can stop carbon monoxide escaping, allowing it to reach dangerous levels. Smoke Detectors will not go off in when only Carbon Monoxide is present, as they only detect smoke.