John Green - It was not the way Curve smelled that Colin liked...

It was not the way Curve smelled that Colin liked - not exactly. It was the way the air smelled just as Lindsey began to jog away from him. The smell of perfume left behind. There's not a word for that in English, but Colin knew the French word: sillage. What Colin liked about Curve was not its smell on the skin but its sillage, the fruity sweet smell of its leaving.