Y'all are into #privacy and #infosec, I hope?
Then hey, maybe consider buyin' a condom for your smartphone's charging cable if you don't already have one. It'll let you block your charging cord's data connections when you charge from unfamiliar USB ports, juuuuust in case there's something gnarly hidden under the casing or lurking on the host computer.
Have a good deal on two that I found during my time spent rummaging around in Bastard Bezos's Bargain Bin. https://www.amazon.com/dp/B00T0DW3F8/