If USB flash drive contain any of malware/virus/worm inserted to linux host without being mount (auto mount disabled), does malware/virus/worm will infect host
If USB flash drive contain any of malware/virus/worm inserted to linux host without being mount (auto mount disabled), does malware/virus/worm will infect host
OK, I agree it could be something more malicious, and that the safest solution is always to bin something unknown.
My position is that the op knows the USB device and suspects it has been compromised by connecting it to a windows machine. But the content may be worth salvaging. In that case, my advice still applies.