Gavin is threatening to get one, too. He sounds a bit congested once in a while, but so far nothing more. My husband and my middle son have been sick for over a week. I also am just now starting to feel the tell-tale signs of it hitting me

The only other thing I would do with a newborn is maybe drip some expressed breastmilk in his nose, breastmilk has natural antibodies and anti-inflammatory properties in it, so it could help. Same reason why you put breastmilk in a clogged tear duct or pink eye or even an ear infection or diaper rash.
Here's hoping it's short lived!!!