My baby Cornish cross chicks are sneezing, they are maybe a week and a half to two weeks old. They are eating and drinking and I don't notice any other symptoms?I have put antibiotics in their water for the past couple of days and it seems like its only getting worse! I also have already lost two, they had crusty eyes and wouldn't open them, it looked like something called coryza? Does anyone have any experience with that? Is that what is causing the sneezing? If it is coryza and I treat them will I be able to process and eat them later? Or are they now permanently infected and not okay to use for meat? Sorry for all the questions! This is my first time raising chickens!