Hello mam, you have not mentioned if your baby has had fever
? if yes then
please get his counts , CBC and a chest Xray done. Of course nebulisation is important
in case your baby has chest congestion which can only be made out by examining him with a stethoscope . Nebulisation does not lead to asthma
and i suggest you to start medication only
after investigations. thanks, wish ur baby a speedy recovery.