The G type gases are clear colorless liquids, when fresh. VX is amber-colored and oily. Distribution occurs in gas form, with inhalation and absorption through the skin as the most common forms of intoxication [1] . They have no taste, and most are odorless; tabun has a slightly fruity odor, and soman's odor resembles camphor. The volatility is greatest for GB, followed by GD, GA, GF, and VX. Subsequent to binding to cholinesterase, sarin, soman, and cyclosarin lose fluorine; tabun, VX, and Russian VX lose cyanide and the thiol groups.