Possible Clues:

• Use fan -- if faulty it could be dangerous
• Not up to code, say
• In rough sea, fun is dangerous
• Failing inspection, say
• Is this where the United Nations protects money? It doesn't sound secure
• A French vault that's dangerous
• In need of a Mr. Yuk sticker
• Is it a rasher that's more like this ?
• Relief as nudist returned clothes giving no protection
• Rash fun with the sea