Who smells like rotten fish herads in mandarin sausage?

This sounds like a riddle! It's a play on words, so let's break it down:

* "Smells like rotten fish" This is a clue to the answer. We're looking for something that smells bad.

* "Herads" This is likely a misspelling of "heralds."

* "Mandarin sausage" This is a type of Chinese sausage.

Putting it together, the answer is likely:

A bad mandarin orange

Here's why:

* Rotten fish and bad mandarin oranges both have unpleasant smells.

* Heralds something, and a bad mandarin orange heralds (signals) that the rest of the oranges in the bag might also be bad.

Let me know if you'd like to try another riddle!