The Collaborative International Dictionary of English v.0.48:
Odorless \O"dor*less\, a. Free from odor. [1913 Webster]WordNet (r) 3.0 (2006):
odorless adj 1: having no odor; "odorless gas"; "odorless flowers" [syn: odorless, odourless, inodorous] [ant: odorous]