@Melodie-And-John0 Oh yes, I wasn't suggesting that it's okay to leave rusty-looking things around, it's tacky, just pointing out that rust isn't actually harmful to ingest.
And there is a lot of misunderstanding about tetanus. It's a bacteria that primarily lives in the soil- it has nothing whatsoever to do with rust- that rusty nail thing developed because a nail that's rusty might have been laying around in the dirt for a long time, and a nail wound is a puncture wound, which closes up immediately, trapping any bacteria inside the body.
Also, this business abut having a tetanus booster every 10 years or if you step on something rusty or get a dog bite is bogus- there was a long-running study that proved that there has never been a case of tetanus in anyone who received one tetanus shot in their chidhood, and never another.