LOL!! There have been days when Roxie has a let a few stinky ones go. One time I was holding her and someone I didn't know very well was at our house. I'm standing there talking and she very silently lets one rip. I quietly backed away from this person thinking they might think that was me that smelled.
She doesn't do it often thank goodness. Then there are times when she'll be laying next to me on the couch and get up to bark. She barks so hard you can hear the little foof slip out. Too funny! Yet they really do act embarrassed and if it's a human that lets one fly.....they run from that person like the wind. My DH will do this when she's on his lap and she looks down like what was that and then jumps away from him and turns and looks at him like, "The Nerve"!! Gas is a very funny subject with these little ones. On a more serious note I have noticed that dogs and cats that haven't been fixed have stinkier and more gas. Just an observation, not sure if there's any truth to it.