The present invention discloses a breathing device that allows a wearer or patient to train for maintaining normal breathing condition on inhaling anesthetics. Further, the device is configured to operate as an anesthetic mask by coupling to an existing ventilation device. The breathing device comprises a concave shell having a transparent window of predefined size is disposed on an outer surface of the shell. A central port with one or more support members is fixed on the outer surface of the shell. A connector comprising a first end configured to couple with the central port in the shell and a second end is removably attached to an inflatable bag, wherein the connector is configured to provide an air way to the inflatable bag, thereby allowing the wearer to play by breathing. Further, the concave shell and the inflatable bag are printed with one or more caricatures.