However, as you can see, that's what happened in one Paraguay store a few weeks ago. And a horrified shopper did exactly what any of us would do in the same situation: he took a photograph then posted it on Twitter. Oh, and presumably he went elsewhere to buy his cheese.
Unsurprisingly, the snap went viral - and the shop was swiftly closed down, pending an investigation by health officials.
"What would you have done?"
Story by The Huffington Post UK and Twentytwowords.com.