<s>[INST] Hello-  My one year old has no fever but a very deep cough and sinus drainage.  He will cough so hard that when he has a full belly he throws up.  We have not been to his pediatrician yet. I have been giving him breathing treatments  up to this point. Should I be concerned if he has the flu? [/INST] Hi, Looking to the history it seems that he might be having viral bronchiolitis giving deep coughing and mucous Chat Doctor. Even if we suspect viral origin, antibiotic medicine is advisable as there might be having mixed infection. If bacterial infection is present there might be having risk of developing pneumonia so antibiotic cover is safe. Consult your pediatrician and get examined. Ok and take care.Meanwhile, give some cough  </s>