I have a rooster that has been sneezing/coughing for about a week and he seems to be the same even though I have him on duramycin 10 and an old remedy of Vet RX applied at nite in his nostrils. He's a little crusty on the nose ( smells like a rotten hound dog ) but eyes are clear and activity is normal. He's also been with a hen from the beginning and she displays no signs whatsoever. Can someone clear up the differences to look for when it comes to a cold vs infection of some kind? All these links give too much info and confuses me even more so.