https://www.bleepingcomputer.com/news/security/usb-fans-handed-out-at-trump-kim-summit-deemed-harmless/

Two separate sources have confirmed that the USB-powered fans handed out at the North Korea–United States political summit that took place on June 12 were most likely clean and not infected with malware.

The USB fans were at the center of a controversy last month when security experts feared they were carrying malware and would infect users' smartphones and computers when they'd be plugged in.