The Collaborative International Dictionary of English v.0.48:

Stinker \Stink"er\, n.
   1. One who, or that which, stinks.
      [1913 Webster]

   2. (Zool.) Any one of the several species of large antarctic
      petrels which feed on blubber and carrion and have an
      offensive odor, as the giant fulmar.
      [1913 Webster]

WordNet (r) 3.0 (2006):

stinker
    n 1: a person who is deemed to be despicable or contemptible;
         "only a rotter would do that"; "kill the rat"; "throw the
         bum out"; "you cowardly little pukes!"; "the British call a
         contemptible person a `git'" [syn: rotter, dirty dog,
         rat, skunk, stinker, stinkpot, bum, puke,
         crumb, lowlife, scum bag, so-and-so, git]
    2: anything that gives off an offensive odor (especially a cheap
       cigar)
    3: an artifact (especially an automobile) that is defective or
       unsatisfactory [syn: lemon, stinker]

Moby Thesaurus II by Grady Ward, 1.0:

60 Moby Thesaurus words for "stinker":
   Havana, SOB, bastard, beast, belvedere, blackguard, blighter,
   bounder, box of cigars, bugger, bum, cad, cheroot, cigar,
   cigar box, cigar case, cigar cutter, cigarillo, colorado, corona,
   creep, cur, dastard, dog, fart, heel, hood, hooligan, humidor,
   jerk, knave, louse, meanie, mother, pill, polecat, rat, rogue,
   rope, rotten egg, rotter, scoundrel, scum, shit, shithead,
   shitheel, skunk, snake, sod, stink ball, stink bomb, stinkard,
   stinkpot, stogie, swine, trichinopoly, turd, villain, viper,
   wretch