Three years ago I was laid off a very busy, stressful, chemical-filled lab job. I went to a local employment centre and did some workshops (Experience Counts, update your resume etc). I even had to do some visioning exercises of where I saw myself.
I drew a picture of me sitting at a desk (instead of lots of walking, carrying, lifting in old job), typing and answering phone and helping people. So I started applying for administrative jobs. One came up at my university that was a perfect match for my volunteer skills.
I went for the interview and saw healthy plants, no perfume and air conditioning that actually worked in August. People were great and I thought it would work out. I accepted the job and am still managing with my increasing muscle weakness.
My lunch hour is spent in a small lounge with my feet up, reading. People know I love books but it is really a chance to rest for the afternoon. I am having troubles doing much walking in the building but can send documents through interoffice mail if necessary.
I am seeing a doctor next week for an accommodation for chemical sensitivity for floor stripping/polishing chemicals but that is the only accommodation so far.
So, sorry for the long post but I think each work place is so different that you need to check out each option. I couldn't manage the student service desk downstairs because of all the perfume the students wear. I can control my own air/heat/windows so that is important for Sjoggies.
Good luck in your future. I read a book about women/work/autoimmune disease from the library. It said "Don't tell anyone unless you need to" so I've done that at this new job. I've mentioned needing time off for doc appts in nearby city and was told "just log it as sick time; you have lots left". We now have a union to protect us on stuff like this too.