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I have worked out an answer for you, please read it through and see what you think, ... lets get started.
1. " Is this something that should get looked at? " : Well yes this is something you should have looked at because respiratory diseases can be quite serious and difficult to deal with in rabbits. Also the main treatments would be antibiotics which are prescription drugs so you would probably have to see your vet anyway.
Of course what is going on with your rabbit seems quite minor at present but it could be the early stages of a disease called snuffles so best get it treated early.
Here is a link to an accurate article covering respiratory disease in rabbits so you can research things further : LINK
2. Fleas in rabbits are quite easy to treat but you must be sure you are using the right flea control product because some are toxic to this species. More info on safe products HERE
I hope I have covered your question fully enough but if you would like further clarification or to talk things over a bit more then I will be on-line for the next hour or so and I will be more than pleased to continue working with you.
Is it possible for this to transmit to humans esp young kids?