Kawasaki 840079 Green 19.2 Volt Cordless Drill Just stop working

It is possible that you overloaded it in high range and maybe stalled it out. Usually when the motor burns it is from overloading/overheating. If this is a newer tool I would try and take it back for warranty repair and not say anything about the smell. Its worth a try, some of the motors for the cordless tools are around 50-60 dollars