[header] How to install gas logs [title] Install a carbon monoxide detector in your home. [step] Carbon monoxide is caused when fuels, such as the natural gas used with your gas logs, are not completely burned. Unsafe levels of carbon monoxide cannot be detected by smell or sight and can cause death. 
For your safety, a carbon monoxide detector should be installed in the fireplace room and each bedroom in the home. The detector will be your only warning against unsafe levels of carbon monoxide in the home.