The rot pulled you closer.
Weaving through the abandoned courtyard, a crushing silence loomed over the moment as you stared down at a twisted corpse.
If you weren't so focused on your next meal, you might have caught a glimmer of something - something out of your peripheral - a faint blue glow, perhaps...
But your rumbling stomach drowned out whatever passive perception you might otherwise have had, and you plunged yourself into the task of unearthing your prize.
Maybe after you'd eaten your fill, you could better focus...
The blue glow slowly began to fade until only the fog remained.