I'd also like to know that. When I recently had a sore lip I found that the taste of my own blood is most closely matched by the taste of pomegranate juice (though pomegranate tastes a lot better!), which is also said to contain quite a lot of iron.

On the other hand, organic molecules with iron ions in it, and even iron ions or salts in water, are quite a way from metallic iron and there is no obvious reason why they could have the same smell and taste.