Nerve agents are a class of chemical weapons designed to disrupt the normal functioning of the nervous system. They inhibit the enzyme acetylcholinesterase, leading to an accumulation of the neurotransmitter acetylcholine. This can result in severe symptoms, including muscle spasms, respiratory failure, and potentially death. Common examples of nerve agents include sarin, VX, and tabun. These substances can be delivered through various means, such as aerosols or liquids, and are highly toxic even in small amounts. Due to their dangerous nature, the use of nerve agents is prohibited under the Chemical Weapons Convention.