Hi Alinthing; I've read that in infants born with B12 deficiency, some of the neuroradiological findings are; cortical atrophy, slowed myelination, and thinning of the corpus callosum.
With B12 deficiency, there can be disturbances of all of the senses, including smell.
Even though neuro-damage may be permanent, there's still a chance for improvement.
