This summer I worked on a farm and there was a milker washing machine that you had to put the soap in to clean the milkes and acid to sanatize them. Well I had just started working there and I didn't know that you had to wait a certain time period between useing the soap and acid. This is because it makes a weak compound of mustard gas because most of the energy in the reaction is released in the form of heat. The soap was dichlorodiethyl sulfide or ClCH 2 CH 2 which is an industrial soap.The sanatizing acid was sulfur monochloride or S 2 Cl 2 which when mixed together make mustard gas or (ClCH 2 CH 2 ) 2 S which is a weak form of mustard gas.
Wholly shit did it smell to thats how i recognized it and the i looked at the labels and found that when the chemicals mix make mustard gas. Nobody or anything was hurt by it but it could have been very bad.

Wholly shit did it smell to thats how i recognized it and the i looked at the labels and found that when the chemicals mix make mustard gas. Nobody or anything was hurt by it but it could have been very bad.