Someone has actually checked out what all happens and here we are. It is nothing like folks think. what is shown again is that we still underestimate the effect of exhaust gas. That makes it rather nice that all that will disappear soon enough.
In the meantime we all forget that a cable does set up a strong magnetic field whose effect is real enough and is best simply avoided. For the same reason i am not inclined to sleep beside a transformer. Ionization may well be the least of it all.
Otherwise, protection is easy enough with a little chicken wire..