The action of rubbing creates friction, which helps remove germs from the skin, and longer rubbing removes more germs.
Vinginevyo, ingawa virusi vya alpha-CoV vinatumika kama kikoa cha jeni cha HCoV-229E, alpaca na ngamia warefu zaidi huenda wanatumika kama wabebaji wa kati wa virusi wanaosambaza virusi kwa binadamu, hasa ilivyo katika hali ya MERS-CoV.