A cough lasting more than 2 weeks in a baby can happen after a viral infection, where the chest and airway stay sensitive even after the fever or cold has improved. This is called a post-viral cough, and it can take time to settle. Other possible reasons include ongoing nasal drip from the nose into the throat, allergy-related irritation, exposure to dust or smoke, or sometimes mild chest congestion that is not fully cleared. In young children, even small irritants can trigger repeated coughing. At this stage, repeated use of cough syrups usually does not give much benefit and is not always needed in babies. Keeping the nose clear with saline drops, maintaining good hydration, and using steam in a mild way can help ease irritation. Keeping the baby away from dust, strong smells, and cold air can also reduce coughing episodes. If the cough is not improving, is worsening at night, or if there is fast breathing, wheezing, poor feeding, fever returning, or tiredness, it is important to get the baby examined by a paediatrician. Persistent cough in infants should always be checked properly to rule out chest infection or allergy-related breathing issues.