Ghoul Bleed AoE Clouds??

As someone who likes games to be internally consistent… is there any rational explanation in the lore (or even player-created lore) for what the red clouds of AoE bleed damage left behind by dead Ghouls could possibly be?

It -appears- to be a cloud of their own blood, but why would that make -me- bleed? It doesn’t look like a cloud of razor blades, after all… <.< I expected it to be Chaos damage, or maybe Poison, and was surprised to find out it was Bleed.

It’s vitality/lifeleech damage actually, not bleed

It deals bleed, no vitality or life leech.

Think of it this way, Bloody Pox and Devouring Swarm can make skeletons bleed. Maybe inhaling/coming into contact with Ghoul blood has a similar effect as bloody pox and causes the player to start coughing up blood and oozing from your pores. (FIY, it also debuffs you, I think it reduces OA)