Why do my fingers smell like poop after I scratch my butthole?

just wondering why this happens when I sniff my fingers after.

Answer:
this is really gross....and the obvious answer would be because that is where the poop comes from...maybe you should stop scratching so much..and by the way wash your hands..I really hope you don't work in the food business especially by where I live...I think I just threw up in my mouth

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