What is aluminum foil around door knob?

Aluminum foil around a door knob is a popular hack used to protect against static electricity shocks. This is because aluminum is a conductor of electricity and can help to discharge any static electricity that may be present on the knob. To use this hack, you would wrap a small piece of aluminum foil around the door knob and leave it in place. This can be particularly useful in dryer climates, where static electricity buildup is more common. It is important to note, however, that this hack does not offer any protection against bacterial or viral transmission, and should not be relied on as a form of hygiene or disease prevention.