I've got a group of chicks that are about 3 weeks old. today I noticed (heard) one of them sneezing. I kept watching her, and it seems pretty regular. I quickly isolated her to her own little "hospital brooder". It seems like the rest of the chicks are fine and unneffected. I've never had much luck with these "sneezers" getting any better in the past. Should I just cull it and be done with it, or wait to see if it pulls out of it? It is eating and drinking normally, just sneezes pretty often. I have these in the basement and am paranoid of it spreading, whatever it is. Has anyone else had any success with healing a sneezer? Thanks in advance.