in the latest fridman pod with the neuralink team they said they have plans to integrate fully into all parts of the brain, and even support multiple neuralinks.

seeing in infrared, radio (visual system)

I don't see why olfaction wouldn't be a part of it as well. download a smell. 

 Based off readily available scent kits used by sommeliers and perfumists its very possible 

 Cybemen is not a cool thing to become 

 sounds like funding is being driven by military applications.