blood being frequently described as having a "coppery smell" in fiction is kind of funny considering that there is a metallic component to blood and it's not copper
in fact if your blood smells or tastes like copper you probably have more urgent things to worry about than it being outside your body. it's probably better that it's not inside you anymore actually.
story where blood is described as smelling or tasting "coppery" and it's actually early foreshadowing that all the characters are suffering from heavy metal poisoning
