What's the worst thing you've ever smelled?

The smell of the homeless crazy person that had the habit of shitting themselves and wearing the same green winter coat even during summer. They would wander off the street every evening and you could smell their presence 30 meters away.
I remember going home every time with the smell stuck on my nostril for half an hour before I could smell anything else.
The smell was nothing I ever experienced in my whole life. I would say it was closer to cadaverine.
Its been 15 years but I can still vividly remember it.
Haunting.