There is also this story from Bloomberg about when one of their journalists tried to buy a single barrel: https://www.bloomberg.com/news/articles/2015-11-03/that-time...

"Could a barrel of crude really kill me?" I asked a petrochemical engineer captive to my persistent, doubtlessly annoying questions. It absolutely can, he said. Hydrogen sulfide gas—H2S, for short—has a terrible propensity to evaporate from crude, knock out your olfactory capabilities, and slowly suffocate you to death.