How sarin gas kills you- The Boston Globe

“It’s really, fast from exposure to death,” said Laxmikant S. Deshpande, a neurology professor at Virginia Commonwealth University’s School of Medicine. “Sarin is extremely potent. It is one of the most lethal compounds that’s out there.”

An excellent article by Matt Rocheleau at The Boston Globe explaining how nerve gas exposure leads to fatalities in the aftermath of Syrian nerve gas attack.

A person would have to have head-to-toe protection and a special mask to safely enter an area where sarin gas had just been released.