I was behind this guy at Logan once who hadn't seen a shower in a week but his body odor was nothing compared to the stench of his feet. The only thing I can compare it to was the smell of a dead baby mouse I found inside a empty beer bottle as a kid. The TSA lady was gagging and the other staff wouldn't get near him. Thankfully this was when I still drank and did drugs so I just sorta stood there and breathed thru my mouth. Think this was for a Southworst flight to BWI.