https://en.wiktionary.org/wiki/sunlight_is_the_best_disinfectant

Fiat Lux

https://www.google.com/imgres?imgurl=https%3A%2F%2Fwww.transparencytaskforce.org%2Fwp-content%2Fuploads%2F2019%2F09%2Fcache_2478822410.jpg&imgrefurl=https%3A%2F%2Fwww.transparencytaskforce.org%2Fsunlight-is-the-best-disinfectant%2F&tbnid=19sY-SRZTuOkmM&vet=12ahUKEwjomKetoIHpAhUHZ98KHSDGDiQQMygWegQIARAw..i&docid=kdz2N8H7FnuxaM&w=407&h=261&q=sunlight%20is%20the%20best%20disinfectant&client=firefox-b-1-d&ved=2ahUKEwjomKetoIHpAhUHZ98KHSDGDiQQMygWehttps://www.google.com/imgres?imgurl=https%3A%2F%2Fcdn.slidesharecdn.com%2Fss_thumbnails%2Ffwd50presentation1-171108210053-thumbnail-4.jpg%3Fcb%3D1510174982&imgrefurl=https%3A%2F%2Fwww.slideshare.net%2FFWD50%2Falex-howard-fwd50-2017-keynote-sunlight-remains-the-best-disinfectant&tbnid=oVkC8-XAARdGfM&vet=12ahUKEwjomKetoIHpAhUHZ98KHSDGDiQQMygRegUIARCSAg..i&docid=dkDsmHs7qT9J3M&w=768&h=432&q=sunlight%20is%20the%20best%20disinfectant&client=firefox-b-1-d&ved=2ahUKEwjomKetoIHpAhUHZ98KHSDGDiQQMygRegUIARCSAggQIARAw