Urban Myth?

[Hrusai]

well imo the same principles of camouflage apply to using reflective foil to avoid thermal signatures, mask your shape etc, should be fine

but yes the way it works is heat is essentially expressed as infrared radiation which is what thermla cameras see, so if you haver some nice shiny foil it reflects the infrared like a mirror back at ya, showing a cold spot on a themrla camera, simples ...just make odd shapes and you should be fine xD