The trail of odor that clings to your pants after a pungent fart. The more powerful the fart wake, the longer the invisible cape of stink billowing behind.
"Don't walk behind me Thomas - you're right in the slipstream of my fart wake."
The ripple of stench left by a coworker as they walk down the hall, often on their way from the bathroom but frequently just to spread the incriminating evidence.
Stepping out of my cubicle, I encountered a nasty fart wake left by mike down the hall.