Crocodile Tears or Acid Rain?
The Infectious Diseases Expert hung around the sewer for a few seconds too long. A mutant crocodile emerged from the sewer and pulled him down into it, but was kind enough not to eat him.
It gave the Infectious Diseases Expert direct engagement with the toxic sludge. As he swam through the mucky stuff, he had an epiphany that it wasn’t toxic sludge after all – it was acid.