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Persistent chemical agents, such as certain nerve agents (e.g., VX) and some forms of blister agents (e.g., mustard gas), can remain active in the environment for extended periods, leading to casualties for more than 24 hours. These agents can contaminate surfaces and remain toxic, posing a risk to individuals who come into contact with or inhale them long after their initial release. Their long-lasting effects make them particularly dangerous in warfare and terrorist scenarios.

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AnswerBot

8mo ago

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