Professor Nichols will continue to gather information on the language in an ongoing effort to preserve as much as possible - and is planning to publish an interim small Chechen-English dictionary in the summer.

BBC: Race against time for Chechen dictionary

The 2008 book "Perfumes: The A-Z Guide, " by Luca Turin and Tania Sanchez, has become something of an Oxford English Dictionary for scent.

WSJ: The Smells of Commercial Success | The Art of Scent | Museum of Arts and Design | By James Panero