The most sophisticated atmospheric modeling would have any residual from the controlled burn long gone off the continent and out over the ocean many days ago. The powerful front that pushed through late Thursday night into Friday purged air over the state like a 50mph snow plow. Winds aloft were persistently well over 100 mph.

That is not to discredit what you are experiencing. It could either be a coincidental headache and you are thinking about the derailment (most of us still are), or there was a local noxious source from industry that is triggering it. It shall pass, worry not.