Hello Let me explain the few facts about the allergy . Mite , dust , pollen , hay , cotton thread fiber ( very fine ) mold, sudden change of temperature in atmosphere ( as you mentioned in your query that hot inside , cool outside), smokes all these are predisposing factors of allergy and at last ( if not treated well ) this allergy turn into asthma . Now symptoms of allergy are running nose, watery eyes, itching over face , redness in eyes , blockage of nostril one or both . There develops whistling sound during breathing in few patients and mild hard breathing. Sometimes patient also develop pain in throat known as sore throat . In your case influenza is over and you don t have any flu . In my opinion all symptoms are an indication of allergy . Hot coffee and steam inhalation provide much needed relief. In my patient I prescribe monteleukast+ fexofenadine in combo pack once or twice according to need. Since this is prescription drug , so please consult a physician and get his opinion. Good luck.