Merdurinous means composed of dung and urine, and if you can't find a use for that word, you have too few enemies. Merdurinous is pronounced with the stress on the second syllable, which makes it a particularly satisfying word to say or shout. I've tested.
It was coined by Ben Jonson in a poem called The Famous Voyage, which I thoroughly recommend you read. It's a mock epic about two men who take a boat up the Fleet River in London. The Fleet River wasn't exactly a river, it was more of a ditch, and in effect an open sewer and the smelliest stinkiest place in Elizabethan London.
Jonson's poem is about two men who sail up it for a bet, just to see if their noses can take it. There's also an informative little digression of fast food in renaissance London, which shouldn't be read by any cat lovers:
Cats there lay divers had been flayed and roasted
And, after mouldy grown, again were toasted;
Then selling not, a dish was ta'en to mince 'em,
But still, it seemed, the rankness did convince 'em
The Fleet River has now been covered over and filled in, but the name survives. When people refer to the British press as Fleet Street, it's a metonym for the street that was once a river.
Jonson's full poem is here.
The truth about Fleet Street