My mother was/is big on the chemical sensitivity thing. Had a great job with the VA (retained her former rank) and after a year, got out on medical. Reason? Allergic to toner cartridges in printers/copiers. Yep. How f'ed up is that? Also claims allergies to formaldahyde (sp), car exhaust, all soaps and detergents, most foods, most medications, household cleaners, and pretty much anything else you can conceive. Oh, and let's not forget me. Allergic to me as well and has been since I was a kid. It used to amuse me to give her a rash.
I have zero patience with those who fabricate or exagerate illnesses or health issues of any kind. If you have a health issue, get treatment or shut the hell up about it.