I have a 1 year old Cat who recently had either a coughing fit or a sneezing fit.. not sure which it is. He has a throaty sound and keeps his mouth closed and you can hear the air coming out his little nose. Sometimes it goes on for a couple of minutes. I feel so helpless watching him. It's the second time in a couple of months he's done this. He will act fine before and afterwards so I'm not sure what to make of it. I've never seen anything come out either. Any suggestions?