After an hour of uncomfortably holding in gas whilst in a public arena, I was able to escape to a side street. There was no one on the sidewalk, so I just let it rip. Then I noticed 2 people in a car not 5 feet from me. All the windows were rolled down and the area was otherwise silent. I paused in mortification, but then realized they hadn't heard me at all! VICTORY! Knowing I had passed loud, uncomfortable wind that close to other people kept me smiling the rest of the walk home.