Linked from
The 10 pages that link to Olfactory nerve, each with the reason it gives.
Olfactory bulbRelated: It is the anatomical route by which odor input reaches the bulb.
Olfaction in birdsRelated: It provides the main pathway from avian smell receptors to the brain.
HyposmiaRelated: Injury to these fibers can reduce the signal reaching the brain.
Sense of smellRelated: It connects the odor-detecting nasal tissue to the brain.