RE: silver vs swineThere is plenty of science behind it as silver is the only substance on the face of the earth that does not support bacterial growth. Unfortunately nobody has been able to make the ideas pay for themselves. Hospitals are loaded with infections and nano particle cleansers have been tested but none approved. The infections took a giant leap up when Phisohex was banned in the late 60s or early 70s. I had a long talk with a doctor who has been tracking this for over a decade.
The phrase "born with a silver spoon in his mouth" comes from an era in which the young of the wealthy were fed with silver spoons as they seemed to get sick less often than poorer children fed with wooden or metal spoons.
BTW--the EPA is not a big proponent of silver nano particle clothing because it goes into the drain water in a few washings and screws up the treatment plants that depend upon bacterial growth.