I'd heard of someone using cryogenic treated silver romex.
While costly, It worked quite well for the stereo performance, but all food cooked in the home took on a very slight taste described as burnt wax.
Apparently this diminishes once the silver romex is broken in. (takes at least 150 hours @ 10 amps for it to settle down)
I could swear my bacon tasted different this morning. Sure enough, after searching cooking web sites, SquareD panels add just a hint of Ginger to food cooked on appliances running on these panels.