Below is an instruction from Human. Write a response.
    ### Instruction:
    What causes Congenital anosmia ?
    ### Response:
    What causes congenital anosmia? Congenital anosmia may occur as an isolated abnormality or be associated with specific genetic disorders (such as Kallmann syndrome and congenital insensitivity to pain). Most cases of isolated congenital anosmia (not associated with additional symptoms) occur sporadically in people with no family history of the condition.
    