On the other hand, I have enough sensory overload as is, without tasting the EM field.
I had a colleague once who had a stroke and described his vision afterwards as looking though splintered glass. After a while, he explained he didn’t perceive it anymore and that his brain just decided to “workaround” the issue making new connections where needed.
I think having some “sense” of magnetic fields could be very subtle, like just a feeling of which direction you’re facing when you’re turning around (you could argue you already use the position of the sun this way, subconsciously).
People into body mods who get a magnetic implant often describe it as a sixth sense [1].
Ocular migraines will give the splintered glass effect. They are temporary however.