Most grill masters prefer charcoal to gas grills. From a health point of view, natural gas grilling like propane is healthy for you and the environment. It is earlier to control the temperatures while grilling with gas than charcoal. When using charcoal, the grilling is smoky, hence increasing the chances of the formation of harmful PAHs. Propane grills produce little smoke. Charcoal grilling produces harmful compounds to the environment that lowers air quality and health risks. If you compare the two, the carbon dioxide produced by a charcoal grill is twice what a grill releases.