Just to be clear... Did your vet confirm that it is an URI?
And yes, I agree with _jessica - it does sound like a sneeze. However, an URI usually accompanied with frequent sneezing, wheezing, and a runny nose.
I think your hedgie was just sniffing around, haha. I find it very cute when Wonton moves her nose around. It's quite fascinating because I can't do that with my nose. :')