overlaps capable of detection of chemical stimulus involved in sensory perception of smell sense organ olfactory organ An olfactory organ overlaps with the olfactory system, because some parts of the nose (e.g. nasal skeleton) are parts of the skeletal system, which is spatially disjoint fma general anatomical term. xao has no subtypes (but Johnstons organ develops from this). An olfactory organ overlaps with the olfactory system, because some parts of the nose (e.g. nasal skeleton) are parts of the skeletal system, which is spatially disjoint olfactory system