Hey, Julie! I don't know if you can remember, but I told you once that I have some problems with MCS, too. Last year I went to see my youngest girl graduate from a summer class for the gifted and talented. I was okay all day until it was time to go. Then on the way back to our car I walked behind another car which was smoking pretty badly out of the tailpipe. I got into our car, and within a few minutes I fell into a total daze. I wasn't asleep, because my head didn't roll forward or back into the head rest. But I was totally unsure of where I was or why I was there. The feeling lasted for about fifteen minutes, and then I was suddenly okay again. So being around the wrong chemicals can definitely cause a daze like that. I hope this helped. Good luck and best wishes!