Heck, LLMs are pretty good at spreading infohazards themselves!
https://www.cnn.com/2025/07/02/tech/chatgpt-ai-spirituality
I wanted ChatGPT to help me. So why did it advise me how to kill myself?
ChatGPT made me delusional
The SCP Foundation is worth a look in this regard. Lots of tales of infohazards and attempts to combat them. Written by actual humans rather than plagiarized and regurgitated by an LLM ;)
https://scp-wiki.wikidot.com/