Source : Webster's Revised Unabridged Dictionary (1913)

Inodorous \In*o"dor*ous\, a. [L. inodorus. See {In-} not, and
   {Odorous}.]
   Emitting no odor; wthout smell; scentless; odorless. --
   {In*o"dor*ous*ness}, n.

Source : WordNet®

inodorous
     adj : having no odor; "odorless gas"; "odorless flowers" [syn: {odorless},
            {odourless}] [ant: {odorous}]