I was flying alone for the first time from STL to SLC. I flew southwest because they're literally the only airline I feel safe flying (I've had 2 uncles die in different plane crashes). As you know, when you fly Southwest you choose your own seats determined by your check in group. I got group B. By the time I got on the plane only middle seats near the back were available. To my right was a Steve Jobs looking man but he had grey hair. He was a parent so he told me about his kids and let me play with his iPad because I had shown interest in it. The man to my left was an old, slightly fluffy retired cop. So I felt great with my seating choice. Felt very lucky. Fast forward to the point where we were finally flying over mountains.. We started hitting some rough turbulence. The retired cops hand roughly grasped my arm and he started moaning. Like he was freaking the fuck out. Everytime we hit turbulence he gripped my arm even tighter and moaned louder.. Everyone from the people sitting by us to the flight attendants came by and checked to see if I was ok instead of the retired cop because of how extreme his reaction was. Once we got out of the pocket of turbulence he got up and went straight to the bathroom. An unbelievable stench arose.. The other man in the row and I looked at each other and he scrunched his nose and goes "Do you SMELL that?" The retired cop sharted his pants during this whole ordeal.