Is it normal to smell metal?
Depends.It depends
Yes, noticing a metallic smell on coins or tools is normal; the scent often comes from your skin reacting with the metal. Smelling it when there’s no obvious source is a different thing, especially if it keeps happening.
If you notice a metallic smell after handling coins, keys, or tools, you’re not imagining it. The smell usually comes from compounds made when the metal interacts with oils on your skin—not from the metal giving off a smell by itself. Lots of people notice it.