The Collaborative International Dictionary of English v.0.48:

Odmyl \Od"myl\ ([o^]d"m[i^]l), n. [Gr. "odmh`, "osmh`, stench +
   -yl.] (Chem.)
   A volatile liquid obtained by boiling sulphur with linseed
   oil. It has an unpleasant garlic odor.
   [1913 Webster]