sillage

plural sillages

1. countableuncountableperfumeryThe trail of scent left behind by one who wears perfume.

   Perfumers prize sillage—the wake of aroma that trails the wearer, lingering after she's gone—precisely because its sensory residue must be manufactured to exist.

   2013 July 12, Megan Garber, “What If You Could Snapchat a Scent?”, in The Atlantic, archived from the original on 14 Jul 2013

   1 more example

   The smell was everywhere back then, especially at college parties, which reeked of the stuff (I also remember sillage clouds of Eternity For Women hanging in the air as well). […] [Drakkar Noir] had face-melting power, with 24-hour longevity and sillage that could kill a plant.

   2011 November 3, Ta-Nehisi Coates, quoting shamu1 (Il Mondo di Odore), “Marketing to the Maxim Set, Cont.”, in The Atlantic, archived from the original on 04 Nov 2011

plural sillages

1. alternativecountableuncountableAlternative form of silage.