There are many books on this, such as 'Chemical Victims' by Dr. Richard Mackarness, 'Human Ecology and susceptibility to the Chemical Environment'by Theron G. Randolph and 5 volumes on 'Chemical Sensitivity' by Professor Rea. My wife sufferedfrom multiple chemical sensitivity. We moved to the South West of the UK to Cornwall in quest of clean air and clean water and chemically clean food. A long story. Treatment involves avoidance of chemicals that are foreign to the body, and desensitization. There used to be a society in the UK called 'Chemical Victims' There is also a medical society in the UK ,British Society for Allergy Environmental and Nutiritional Medicine'