Run a carbon filter between the room and the exhaust point.
They aren't allowed to use thermal imaging unless they already have a warrant, in which case you're already in deep doo doo.
Your room size is ideal for that light. Get an air-cooled hood for it though.
In winter, you can flip your exhaust to blow into your home assuming that the filter is working, and use that for heat. We all know heating fuel is precious these days!