I had a hysterectomy 9 years ago (ovarian cancer but no chemo) and have since developed chronic migraines + headaches, allergy
to cat hair that was treated with allergy
shots over 2 years, and an exacerbated dust allergy
that did not respond to shots. My migraines involve great sensitivity to odours and sounds.
You are well within your rights to ask people around you (at work or school) not to wear perfumes because most of the new perfumes are chemical-based.