The Collaborative International Dictionary of English v.0.48:

Odorous \O"dor*ous\, a. [Written also odourous.] [L. odorus,
   fr. odor odor: cf. OF. odoros, odoreux.]
   Having or emitting an odor or scent, esp. a sweet odor;
   fragrant; sweet-smelling. "Odorous bloom." --Keble.
   [1913 Webster]

         Such fragrant flowers do give most odorous smell.
                                                  --Spenser.
   [1913 Webster] -- O"dor*ous*ly, adv. -- O"dor*ous*ness,
   n.
   [1913 Webster]