A word to describe the smell of a bums, transients, vagrants, homeless, etc. Very prevalent in large cities.
Can also be used as an insult to someone that smells bad or hasn't taken a shower in a while.
"I had a great trip to San Francisco last week, it was beautiful, but I couldn't get away from the bumsmell!"
"Dang Kerra, you reek of the bumsmell!"