Something in your house smells weird and your brain has already written a full horror screenplay about it before you've even opened your eyes.
Toast? No one's making toast. Vanilla? Suspicious. Burning hope? Yeah, that tracks.
Your half-asleep brain is the worst detective on the planet. It catches one faint whiff of something vague and immediately jumps straight to ghosts, gas leaks, or cursed leftovers from three weeks ago. Your nose files an incomplete report and your brain just runs with it like it's breaking news.