There's a cultural bias against medical treatment for stuff that is less visible or critical. There's a general consensus that things like eyes or legs are useful, even though surveys of paraplegic patients report that partial restoration of genital sensation is more meaningful to them than walking.

Fewer people think about less obvious senses like _tasting_ and _smelling_, to the point that it can be difficult to get the condition taken seriously, even though complete loss of smell can be highly traumatic.