my daughter is 6 month old and she is suffering from cough and cold. she only coughs while she is asleep. there's no running nose either.

A. yes cold can be different. Cold and cough in babies is mostly due to seasonal flu which is a viral infection it happens due to season change. Best home remedy is to give just steam inhalation to the baby which helps in the nasal blockage . If any car for fever persists then best see a doctor dnt self medicate .