Does my 4-month-old son seem to have a cold every day?

Hi, my son is 4 months old and he seems to have a cold every day because his nose is making a little noise like he is with a small baby, but when he breathes it makes a little noise in the nose and in the chest what it can be because he is not cooled nor flu and he is very active does not have shortness of breath, but why is that snoring in the chest? thanks
Expert answer:

Usually this is related to some irritation of the upper airways (gastro-esophageal reflux, for example) or an increase in phlegm production and consequent difficulty in elimination (very common in infants). Usually this tends to disappear as the child grows up (sometimes it can even get worse) and is very dependent on the baby's food (milk that is not the mother's milk is very common in babies), needs help from a pediatrician to handle this situation.

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