Q:
Why does blood smell like metal?
A:
Quick Answer
Owing to its iron content, human blood smells like metal to many people. In fact, when people rub their skin along certain iron-containing objects, such as coins, perspiration reacts with the iron to produce a metallic smell, according to LiveScience.com.
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Full Answer
The fact that humans smell iron when touching something made of iron is likely a result of the evolutionary sense for a smell of blood, reports LiveScience.com. It is also a result of metal-induced oxidation of oils in the skin. People are smelling is their own blood through their skin rather than the iron in the objects they are touching.
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