[eleni121]

I think you've been had. Or your teacher was confusing odor with Odysseus...NO connection. The name is derived from Greek

οδυσσομαι (odyssomai) which means "to hate".

[Soliton]

http://links.jstor.org/sici?sici=0002-9475(1906)27%3A1%3C65%3ATEOO%3E2.0.CO%3B2-7

There are many theories none of which are valid. I made mine tongue in cheek, not as literal etymology. I think the best case is “nobody” from “outis”.