Chick with whistle like breathing

[Saaniya]

I was hoping an update as well. I have a 2.5 week old chick that started whistling while breathing but not all the time. She wasn't growing as quickly with her hatched group and I kept her in with the next group hatched group but then they were getting bigger than her within 3 to 5 days. I have a much smaller brooder that they go in for the first few days sometimes up to a week and then they go into a larger brooder. The water had leaked and soaked their bedding twice. Not sure why. I'm constantly checking on them throughout the day so I was able to change it out quickly. Shortly after that she started sneezing. She seemed to be breathing quickly but no open mouth breathing. No rattling it clicking noises when I listen to her chest. She's eating, drinking, pooping, grooming and feathering normal. There's no puffy areas on her and no discharge from eyes or nose. I checked her crop and messaged the area but there wasn't anything in her crop. She also seems not to whistle while breathing when sleeping. I haven't experienced this before. Based off what I'm finding is that it's most likely a respiratory infection and I've ordered vetRx. It's arriving today. In the meantime, I've given her poultry cell. She hasn't been sneezing since I have her 1cc of the poultry cell.
I will definitely update how she's doing in a couple days.

if any sound came through breathing it means that he inhale either food or water
you need baytril 10% but how big he is depend if he is very young chick i won’t give baytril as it’s a very strong antibiotics

i would use baby amoxicillin or doxycycline