Clostridium botulinum bacteria produce a potent neurotoxin called botulinum toxin, which causes the serious illness botulism. The toxin attacks the nervous system, leaving the body unable to control its muscles and making every breath a struggle. Without immediate treatment, botulism can be fatal.
Source: [Phys.org](https://phys.org/news/2026-10-humans-domesticated-bacterium-botox-treatments.html)