Multiple chemical sensitivity (MCS) is escribed as a chronic condition characterized by adverse and variable effects from exposure to low levels of chemicals or other substances in modern human environments. Suspected substances include smoke, pesticides, plastics, synthetic fabrics, scented products, petroleum products, and paints. Dr. Martin Pall, molecular bioscience professor at Washington State University, finds that MCS sufferers “report being exquisitely sensitive to a wide range of organic chemicals,” and from 100 to 1000 times more sensitive to hydrophobic organic solvents than normal people.MCS has also been termed toxic injury (TI), chemical sensitivity (CS), chemical injury syndrome (CI), 20th Century Syndrome, environmental illness (EI), sick building syndrome, idiopathic environmental intolerance (IEI), and toxicant-induced loss of tolerance (TILT).