I don't trust anything with autoplay, mine or other people's.
I always click on the little plus sign to expand, not doubleclicking. (yes, W7 too, thanks to ClassicShell).
And when I can, I put a folder named "autorun.inf" and a file named "recycler" on removable drives of family members, and if by any chance I find autorun.inf is no longer a folder but a file instead, I declare the device infected, recover what I can, format, and put the folder again.
Never had a virus coming from USB, old or new OS. Android devices as Usb drive will not change that.
That old virus that made the phone behave as a keyboard when attached to the USB, that, on the other hand, I don't know how to counter.