They were incoherent and had difficulty answering when the police questioned them. Responding officers contacted local medical personnel. All three students were treated and released from Provena Covenant Medical Center in Urbana later that morning. Obviously, this was an erroneous assumption. Not only would the mixture not create an hallucinogenic atmosphere, it can cause serious internal damage, said Connie Fischbein, a specialist in poison information at the Illinois Poison Center.
Household ammonia is very caustic and when consumed, causes internal burns.
If fumes from lighter fluid coat the lungs, they can prevent oxygen flow and could be life-threatening. Cough syrup increases blood pressure and heart rates. Combined, the three are not safe to ingest. You're not likely to get a true hallucinogenic effect from that combination. University officials are considering disciplinary action in relation to the case.