Brass “Touchless Door Openers” Are Everywhere Now—But Do They Actually Work?

Brass “touchless” door opening hooks (or keys) are showing up all over the internet with a simple pitch: use them instead of your fingers to open doors and punch keys to protect yourself from germs. Brass is an alloy of copper and usually zinc, and copper does have antimicrobial properties. So, will it protect you from germs and more importantly, COVID-19? Probably not, and here’s why.

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