It's not the heat, it's the humidity.
(True explanation)
And that's why cooks and chefs throw wet towels in the bin. A wet towel, in a commercial kitchen, unless specifically being used for something (creme brule, for example) is dangerous.
I hide dry towels in the ceiling tiles, so I've always got some. And out in the truck. And in the back of the freezer. And out in the building where they store the chairs......
/johnny