Phlogiston theory and radiation theory with "back radiation" shares a common theme: Both describe phenomena taking place as if in a vacuum, without input from the actual environment:
Phlogiston theory states that a phlogistated substance burns by consumption of phlogistons (or "fire elements") inside the substance in a process of dephlogistication without input from the environment, as if taking place in a vacuum.
For an earlier post on phlogistons and infrared photons, see here.
PS You can buy an infrared detector like an infrared camera reacting to infrared light. Is an infrared camera a collector of infrared photons, like a butterfly net collecting butterflies flying through the air?
No. A cooled infrared camera absorbs heat energy from a warmer object and an uncooled infrared camera emits heat energy to a cooler object. In neither case does the camera collect a nominal flow of "light elements" supposedly being emitted by an object into a surrounding vacuum. Compare with previous posts under category "infrared thermometer".
You can use your on body as detector of a colder or warmer environment than your skin, by noticing a feeling of being cooled or heated, but your perceived sensation is not evidence of "infrared photons" flying in and out of your body.