There's this story where Peter ate a lot of beans and then during a family game night, he couldn't hold it in and let out a really long and loud fart. It disrupted the whole game and everyone was either disgusted or laughing really hard. The kids were making faces and Lois was trying to get Peter to go outside until the smell cleared.
I remember a story where Quagmire was over at the Griffins' house and there was a silent but deadly fart. Everyone suspected each other until they realized it was actually the family cat who had made the stinky mess. It was funny because they were all looking at each other accusingly.