How did osmium get its name?

Answer 1

From Greek osmē, smell (from the strong odor of osmium tetroxide).
Named osmium after http://www.answers.com/topic/greek-language osme meaning "a smell", because of the smell of the volatile osmium tetroxide

Answer 2

He suggested osmium's name because of the unusual smell of the compound he was working with, osmium tetroxide. Osmium comes from the Greek word some which means smell.

Answer 3

London, England, 1803, Osmium was discovered during investigation of the Platinum group, by Tennant and Wollaston