Yes, it is generally considered safe to apply vapor rub or vapor patches to an infant’s chest to help with a cold. However, there is the rare possibility that the strong vapors could irritate the airway and make the symptoms worse. So, feel free to use this remedy, and the other cold and cough remedies recommended here.
“Is it safe to apply Vick’s to a 4-month-old’s chest to help him breathe through a runny nose and cough? (My 4-month-old weighs 26 lbs) This is our third day of the cold, and he seems to be wheezier and my mother thought it might help.”