Thank you for your query.
You have done the right thing by giving your son Tylenol
and uncovering him. You can continue giving Tylenol 5 ml. 4-6 hrly. if the temperature is above 99F by side. By the way, Tylenol is for fever
and not cough
. If the fever does not come to normal in the next 24 hours then it is advised to consult your doctor who shall examine your son, the swollen lips, pharynx and chest and start appropriate medications.
I hope I have answered your query to your satisfaction.
Wishing your son a speedy recovery.