In abnormal psychology in college I heard about the Mad Gasser of Mattoon mass hysteria case. It was one where people claimed they were gassed in their homes by something that made them ill. I thought this an odd thing to become mass hysteria but creepy clowns just happened so who am I to just reasonable hysteria? Then I started looking into the Mad Gasser and found there was more than the 1944 case in Mattoon, Illinois. There were cases 11 years earlier in Boutert County, Virginia. some in Lake County, Florida 9 years before Mattoon. These weren’t mentioned in the case study I read so was there something going on? Was it all group madness? Was it a combination of both?