Hi, I am Dr Suresh K Yadav MD (paediatrics), I had gone through your question and understand your concerns, Your baby seems to be suffering from reactive airway disease or hyperreactivities of airways . I mean in a normal baby this type of illness is limited to cough only , but in babies having hyper reactive airways (body responding more than what is supposed to ) it leads to spasm of airways leading to wheezing. Chances of this be allergic are more if there is family history I d allergy or asthma. It is also common in babies having respiratory problem at birth. Your babies is not getting cold more , but his cold is becoming complicated more due to wheezing. Hope this answers your question. If you have additional questions or follow up questions then please do not hesitate in writing to us. I will be happy to answer your questions Take care.