So my chicks got over some kind of respiratory sickness a couple of weeks ago. This week I put them on Denagard for 5 days because they were still sneezing a bit and I found one of the silkies with bubbles in her eyes...but they disappeared an hour later. Anyway, the Denagard did nothing. Does that mean this was viral? Also, should I be worried about the residual sneezing? The only ones that do it are the bantam chicks in the brooder, the standard chicks in the coop with the broody have not been sneezing. Is this normal and is there anything else I can do about it? They don't have any other symptoms.