A.H.
I'm not sure if this will help but I've noticed over the past year or so that my son's hearing hasn't been quite like it should. He's failed the hearing they give at school (only in left ear) two years in a row. We've tried rounds of antibiotics and nasal spray. Nothing seems to help with the hearing and the constant stuffy nose. He has no history of ear infections, ear aches, drainage or itching. We took him to an Ear, Nose and Throat doctor a few months back. They're going to try putting tubes in his ears to see if that will help. They said he did have large amount of fluid in his ears.
While we were in the office, the doctor did mention that he also puts tubes in adult's ears. Maybe you could check with your doctor to see if that could be a possibility for you.
Good luck!