A barbecue grill has a grill burner and a cooking grate disposed within a housing with an upper portion pivotally mounted on a lower portion. Means is provided for supporting the housing upper portion in a partial open pivotal position. A smoke incinerator is mounted on the housing upper portion, and has a burner for generating a flame. Smoke is converted to invisible exhaust gases by heating the smoke with the flame. A grill burner locking means is provided, which will prevent unignited fuel from accumulating in the housing in the event that the incinerator burner fails to ignite.