Age? why on nebs?
Your ? Raises ?. Breathing rx is one good way to moisten the airways of a congested/wheezing
kid which helps them get mucous up.
If baby is playful with resp rates 40's to 50 & taking fluids well, this is probably not much of a change and nebs help some. If the rr>55, baby iis working to breathe & feeds are falling off it is time to discuss the change with your dr.