Every funeral service or interment, or part thereof, hereafter conducted in this state must be in the actual charge and under the supervision of a Kansas licensed funeral director, or of the duly licensed assistant funeral director: Provided, however, That this shall not prevent a family from burying its own dead where death did not result from a contagious, infectious or communicable disease, nor shall it prevent a religious group or sect whose religious belief require the burial of its own dead from conducting such services where death did not result from a contagious, infectious or communicable disease.