Racer, if your willing to pay the price and explore diet, I have evolved over the last 30 years into a now gluten-free, flour free vegan. Research suggested to me that any flour restricts arteries for about 8 hours after ingesting. I forget the %, but it's over 25 for sure. Could it influence hearing? I'm not sure because I do not have this issue. Simply put, stick to veggies, fruits, nuts, seeds, beans and gluten-free whole grains for a week and see where you are at. It clearly helps my air flow among other things.
Apologizes to all who might feel this is off topic.