Originally Posted by mrsD

That leaves outgassing from new wood floors or remodels.

Are you taking benfotiamine? This will help if you are getting formaldehyde poisoning.

I have read on the net that some flooring materials come from China and outgas quite a bit of solvent vapors. I have seen some complaints about this.

Did you ever get the DNA methylation testing? I'd do that next.

I still think the car may be a source of something.