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The lingering scent of cheese and/or onion and/or bread and/or pickles and/or beef after consuming a sandwich and/or burger.
After eating a McMenamins bacon cheeseburger the scent of beef and cheese will linger on your finger tips for hours after digestion.

Ex. "I got a spicy Italian at Subway today and got the worst Sandwich Hands!"
by grayson_1895 January 18, 2013