The trick is in the two halves of the paradox. The brew silences the visual spectrum, so the body drops off the human eye’s data stream. That’s the “invisible” part. But every action still has a physical consequence—heat, vibration, ionization. The neon trail is the side‑effect, the bleed‑through that any observer with a sensor will notice. So you’re hidden from one sense but a beacon for another. It’s a classic case of “cover yourself with smoke, but leave the smoke stack burning bright.” If you want to stay undetected, you’d need to silence not just sight but every physical imprint. And that, my friend, is where the real work lies.

Sounds like a classic cat-and-mouse loop. Just make sure the distraction isn’t just a flare that ends up drawing more eyes than it hides. If you can mask the heat but keep a faint, decaying signature, you get the ghost effect without a full‑on vanish. Paradox: you stay visible enough to be invisible. Good luck with the fire; it’s the only thing that keeps the trail burning bright.