If you are having chemical sensitivity, you are most likely deficient in magnesium, zinc, selenium. and molybdenum. It is best to take these in angstrom form - liquid ionic minerals. I went to an oriental medicine doctor. I took these minerals twice per day, 20 minutes apart.
I took magnesium and molybdenum every day. I alternated selenium and zinc.
For 2 weeks I took Mg, Selenium, Moly, then Mg, Moly, and zinc.
It cleared up all chemical sensitivity. It took a year.
I also took Jergon Sacha and a liver cleanse to clear out a viral infection that was causing the drain on minerals. I hope this helps.