My baby boy 4 month old now, Suffering from cough and cold. Please prescribe medicine

A. cold is viral now. Cold and cough is due to seasonal change and is of viral and is common . Safest to give indirect steam inhalation for nasal block and also protect baby with wollens clothes . Can put nasivion / saline drops . Take flu vaccine yearly for protection from flu after six mnths of age . Nebulization can be done by doctor advise . See a doctor if fever or discomfort .