A couple of my chicks had really bad pasty butts from being shipped and I put each in a cup of warm water and they seemed to like it. It was very warm in the house that day, so I just wrapped them in a paper towel to soak up as much water as I could, then put them in the brooder still wet. They dried in just a couple of minutes. Some people blow them dry, but I didn't want to scare them.
I am not an expert, but I was just reading an article in this month's Backyard Poultry about what can happen if you do not quarantine new birds. You could lose all your other chickens. The new chicks will be bringing in all kinds of organisms that you don't have in your chickens quarters. I would be especially careful with chicks that are dirty and smelly.