stinker
stin-ker
noun
Something that produces a very strong, unpleasant odour.
"The rubbish bin was a real stinker."
noun
A particularly difficult or unpleasant problem, task, or situation.
"That exam question was a proper stinker."
Thesaurus
Synonyms: stinkpot, rotter, puke, lowlife, skunk, crumb, so-and-so, dirty dog, bum, scumbag, rat, scum bag