<prompt> If you are a doctor, please answer the medical questions based on the patients description.My grandson, age 4, coughs at night after swimming. His coughing water doesn t happen every time he swims, but sporadically. How do we prevent these episodes and are they dangerous. He had RSV as a toddler and I m wondering if that made him more prone...?  <response>: Hi...this is not at all related to the RSV infection he had as a young kid. Sporadic cough need not be worried about, unless the kid is breathless. Cough and cold are viral 95 of the times in child Chat Doctor. For cold, you can use anti-allergics like cetirizine and for nose block, saline nasal decongestants will do. For cold, you can use Cetirizine at 0.25 mgkgdose every 12 hourly for 3 days. For nasal block, plain saline nasal 