Years ago, I spent a week at a friend's summer house, in an attic area that had just been roughed in with chip board. I was sleeping there but away from it entirely the rest of the time and from the house most of the time -- attending a week long event in another town.

I became quite sick by the end of the week. In retrospect, the outgassing from that chip board did quite a number on me.

I have no difficulty at all believing people who put in manufactured materials and end up sick. E.g. also the Chinese drywall scandal that became prominent a few years ago.

I regret that "cheap" has so permeated our culture that avoiding it has become a marginal market with correspondingly elevated prices.

And even when you pay more, today it's not a guarantee that the basic materials involved will be higher quality. Lots of McMansions stuffed full of such stuff. I watched one go up a few years ago across from my parent's place, and despite the tony location and price, they didn't do the exterior correctly. We're waiting for the water issues to manifest.