[1] : The Collaborative International Dictionary of English v.0.48

odor \o"dor\ =o"d~er, n. oe. odor, odour, of. odor,
   odour, f. odeur, fr. l. odor; akin to olere to smell, gr.
   'o`zein, lith. usti. cf. olfactory, osmium, ozone,
   redolent. written also odour.
   any smell, whether fragrant or offensive; scent; perfume.
   1913 webster

         meseemed i smelt a garden of sweet flowers,
         that dainty odors from them threw around. --spenser.
   1913 webster

   to be in bad odor, to be out of favor, or in bad repute.
      1913 webster
see also:
olfactory osmium ozone redolent odour to be in bad odor 

[2] : WordNet (r) 2.0

odor
     n 1: any property detected by the olfactory system syn: olfactory
          property, smell, aroma, odour, scent
     2: the sensation that results when olfactory receptors in the
        nose are stimulated by particular chemicals in gaseous
        form; "she loved the smell of roses" syn: smell, odour,
         olfactory sensation, olfactory perception
see also:
olfactory property smell aroma odour scent olfactory sensation 
olfactory perception 

[3] : Moby Thesaurus II by Grady Ward, 1.0

77 moby thesaurus words for "odor":
   air, aroma, atmosphere, attribute, aura, badge, balminess, bouquet,
   brand, breath, cachet, cast, character, characteristic,
   configuration, cut, differentia, differential, distinctive feature,
   earmark, feature, fetor, figure, flavor, fragrance, fragrancy,
   fruitiness, gust, hallmark, hint, idiocrasy, idiosyncrasy, impress,
   impression, incense, index, individualism, keynote, lineaments,
   mannerism, mark, marking, mold, muskiness, nature, nosegay,
   particularity, peculiarity, perfume, property, quality, quirk,
   redolence, savor, scent, seal, shape, singularity, smack, smell,
   specialty, spice, spiciness, spirit, stamp, stench, stink,
   suggestion, sweet savor, sweet smell, taint, tang, taste, token,
   tone, trait, trick

Odor >> O Words
Odor, definition of term: Odor
odor_pag1.html