Copper is great at killing superbugs!
Copper has been exploited for health purposes since ancient times. Egyptian and Babylonian soldiers would sharpen their bronze swords (an alloy of copper and tin) after a battle, and place the filings in their wounds to reduce infection and speed healing.
Copper was also used to cure medical problems in ancient China and India and is an important component of Ayurveda medicine today. Hippocrates in Greece and the Aztecs used copper oxide and copper carbonate, combined with other chemicals such as sodium carbonate, olive paste and honey, to treat skin infections Copper workers in Paris were protected from several cholera epidemics and French wineries even applied copper sulphate and slaked lime, called Bordeaux mixture, to vines to prevent fungal attack. Copper is also recognized as a potent antibacterial particle agent too.

Scrutinize any water bottles you might purchase. Many of them are "copper" coated. Started looking into them a couple months ago and couldn't find any I could 💯trust.