A quick note on this: Appeal to the building owners / maintainers for unplated, unpolished brass handles. The copper in brass (or other alloys of copper) is a

A quick note on this: Appeal to the building owners / maintainers for unplated, unpolished brass handles. The copper in brass (or other alloys of copper) is antimicrobial. Obviously the effect isn't immediate, clinical trials suggest it is immpresively high.