It's easiest to compare this condition to allergies, although it isn't truly allergy, because it doesn't cause a histimine response. The symptoms are more closely related to poisoning. Nausea, disorientation, muscle weakness, achy joints, etc. These symptoms come from exposure to things we cannot avoid in our society. Perfumes are lethal to us. This includes perfumed deodorant, drier sheets, detergent, hair spray, etc. One of the worst is plug-in air fresheners. Other things affect us, but the perfumes seem to be hardest to avoid. Even masks don't help, unless you wear the kind for toxic waste, with big filters attached. Who wants to wear that to work and the grocery store, etc. It also seems that more things are perfumed now than a few years ago. It's hard to find toilet bowl cleaner, shampoo, dish soap, etc. without added perfumes.