"Copper destroys the replication and propagation abilities of SARS-CoV, influenza, and other respiratory viruses, having high potential disinfection in hospitals, communities, and households. Copper can eliminate pathogenic organisms such as coronavirus bacterial strains, influenza virus, HIV, and fungi after a short period of exposure. Copper seems to be an effective and low-cost complementary strategy to help reduce the transmission of several infectious diseases by limiting nosocomial infectious transmission"
https://pubmed.ncbi.nlm.nih.gov/33069048/
"Copper ions form a hole in the cell membranes of the microbes, allowing the “guts to leak out,” says Schmidt. The ions then slip inside the microbe and dismantle its DNA, ultimately killing it. The copper appears to kill viruses such as norovirus as well as C. difficile and other harmful bacteria, says Schmidt."
https://scienceline.org/2020/02/copper-antibacterial/
"Copper kills most germs within hours, and renders others non-infectious."
"Copper can kill viruses and other germs by disrupting the protective layers of the organisms and interfering with its vital processes."
https://www.insider.com/guides/health/does-copper-kill-germs-and-viruses
"copper to the virus’s spike proteins, it could be rendered inoperable. The process is called “mismetallation,”"
https://research.arizona.edu/stories/could-copper-disable-virus-behind-covid-19
"copper zapped the virus within minutes while it remained infectious for five days on surfaces such as stainless steel or glass."
https://www.smithsonianmag.com/science-nature/copper-virus-kill-180974655/