Below is an instruction from Human. Write a response.
    ### Instruction:
    What causes Problems with Smell ?
    ### Response:
    Problems with smell happen for many reasons, some clearer than others. Loss of smell may be permanent or temporary, depending on the cause. Effects of Aging As with vision and hearing, people gradually lose their ability to smell as they get older. Smell that declines with age is called presbyosmia and is not preventable.
    