Myfanwy
From Sciencemadness Wiki
Myfanwy, whose real name is Max Klemke, was a ScienceMadness user who, at the young age of fifteen, died, presumably during his attempt at synthesizing phosgene. He was an example of how being negligent with safety in a chemistry environment can lead to serious consequences.
Background
Born 1994, Klemke joined SM in October, 2009. Klemke frequented the Energetic Materials sub forum, posting information and questions involving very dangerous and deadly chemicals, such as acetone peroxide, hydrogen cyanide, and phosgene.
Klemke also posted videos of his dangerous experiments on YouTube, his channel can been viewed here.