Abstract: A wearable gas detector is disclosed herein that has a band adapted to wrap around a wrist of a user and a housing coupled to the band. A battery and an indicator can be secured to the housing. The housing can also contain a gas detector that is coupled to the battery and the indicator. The gas detector can be adapted to detect the presence of at least one gas and to activate the indicator to notify the user that the at least one gas has been detected. The indicator can take many forms such as that of a vibrator, an audible alarm, a siren, a buzzer and a light source. In a specific embodiment many gases can be detected such as gases that are the result of combustion.