These agents are poisonous vapors, aerosols, liquids, and solids that have toxic effects on people, animals, or plants. They can be released by bombs or sprayed from aircraft, boats, and vehicles. They can be used as a liquid to create a hazard to people and the environment. Some agents may be odorless and tasteless. They can have an immediate effect (a few seconds to a few minutes) or a delayed effect (2 to 48 hours). While potentially lethal, these agents are difficult to deliver in lethal concentrations. Outdoors, the agents often dissipate rapidly. These agents also are difficult to produce and deliver. What category of mass destruction is this?
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