I have an upper respiratory infection w/bronchitis. While coughing I had a popping sound in my left ear. Every now and then, when I cough I have wind coming out of the left ear, although the sounds in both ears is muffled - but I can still hear. The doctor I went to said I have no wax, but there is fluid on the ear. I read online where water on the ear can cause deafness - I do not have pain, but I do feel pressure in the left ear (the same side I get the air blowing through). Any suggestions. Should I be concerned and go to an ear, nose, and throat (ENT) specialist? --- or wait out the recovery of the bronchitis to see if it goes away itself?