Suspected Syrian Chemical Weapons
-Man-made nerve agent 
-Used by Iraq against Iran
-Used in 1995 Tokyo subway attack
-Exposure can be by inhalation, ingestion and skin absorbtion
-Man-made nerve agent
-Most potent of all nerve agents
-People can be exposed through skin contact or inhalation
Mustard Gas 
-Chemical warfare agent
-Causes blistering of the skin and mucous membranes
-Used in World War One
-Exposure is not usally fatal