Upper respiratory infection?

[Nesquik]

Hello guys! Hope you are staying safe!

I am having a bit of a situation with my hamster and I wonder if anyone can relate.

2 days ago he was acting fine..running in his wheel and doing hamster stuff. I picked him up and I've noticed a strange noise coming from his nose. It sounded like a runny nose and a bit like a click...now I know this could be a symptom for an infection so I started monitor him

Last night he didn't went out to play in his wheel and did not touch his food. He only came out to drink. I've intentionally bought some new banana treats and a bag of his food mix to see if he will eat. Unfortunately the bowl was still full of food as he usually stuffs his cheeks and then bring it into his nest.

This morning I picked him up and he was still doing the noise and noticed a bit of crust at one eye. Called the vet and booked an appointment for today at 5.

Does anyone have had this situation before? If yes is it deadly for hamsters? Can they recover with medication?

He is a 11 month old male Syrian hamster..He will turn 1 in October. I mention this as I don't think he is that old for his age and I expect that at this age hamsters are still active.

Thank you in advance for your responses and I will post an update after the vet appointment.