The answer to 'which is better carbon monoxide detector or' is that a carbon monoxide (CO) detector is generally better than a regular smoke detector for detecting dangerous levels of carbon monoxide in your home. Carbon monoxide is an odorless, colorless gas that can be deadly, and a CO detector is specifically designed to alert you to the presence of this hazardous gas.
CO detectors are more sensitive than smoke detectors at picking up carbon monoxide, which can build up slowly and go unnoticed. They provide an early warning system that can give you and your family time to evacuate and get to safety. CO detectors also typically have a digital display that shows the current CO level, allowing you to monitor the situation. While smoke detectors are important for fire safety, they do not protect against the invisible threat of carbon monoxide poisoning.