I've had them for years, burp attacks almost every night. What really helps for me is to completly exhale (though my nose) everytime before I swallow. That will help prevent you from swallowing air. So it's liquid in mouth, hold (don't swallow), exhale though nose, swallow. It takes practice, but after awhile nobody can tell your doing it.
Well, gotta get back to my ramon noddles in the basement before they get cold. lol