[wahern]

I hope it works similar to bacteria, where "tile, wood, and laminate surfaces transfer much more bacteria than carpeted surfaces." (https://news.nationalgeographic.com/news/2014/03/140315-five...) Most of the security areas I've seen are carpeted, albeit low pile carpeting.

But maybe it doesn't work the same; or maybe it's just so contaminated it doesn't matter. The best solution[1], though, is probably to sell your soul to the devil and enroll in TSA Precheck.

[1] Presuming there's a real problem. Aren't the fungi that cause atheletes foot (tinea pedis) and onychomycosis (infection of the nail bed) pretty much everywhere already? I think it's more a matter of keeping your [low-temperature] extremities dry. Onychomycosis is almost inevitable past a certain age because of immune and circulatory deficiencies.