system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How does VX (the nerve agent that killed Kim Jong-nam) kill you even with a tiny amount applied to the skin?
gpt
From Wikipedia:

*"VX blocks the action of acetylcholinesterase, resulting in an accumulation of acetylcholine in the space between the neuron and muscle cell, leading to uncontrolled muscle contraction. This results in initial violent contractions, followed by sustained supercontraction restricted to the subjunctional endplate sarcoplasm and prolonged depolarizing neuromuscular blockade, the latter resulting in flaccid paralysis of all the muscles in the body. Sustained paralysis of the diaphragm muscle causes death by asphyxiation.*"

TLDR? VX stops communication between your nerves and muscles, causing your diapraghm to stop working, which makes you suffocate.