Once MCS is acquired, sufferers react with various symptoms to a variety of seemingly unrelated chemicals that they previously tolerated, such as fragrances and cleaning products.
Mara tu MCS inapopatikana, wagonjwa huitikia wakiwa na dalili mbalimbali kutokana na kemikali mbalimbali zinazoonekana kuwa zisizohusiana ambazo walivumilia hapo awali, kama vile manukato na bidhaa za kusafisha.