I have a smell that's permanently etched into my brain due to rib sandwiches. When I was around 15 or so, my buddy and I finished off a bottle of Scotch and decided to eat costco rib sandwiches - great idea I know. We eventually passed out as we had to be up for work the next day.
Well my buddy woke up and proceeded to vomit his up all over the table and floor, the sour smell of the booze/bile and bbq pork was fucking awful, I nearly puked myself. Later the next day I found out from my mother that "someone puked in the washing machine" so he had also done that as well.
Now I'm hungry for McRib