I keep a back-up of all my documents and images on an USB stick. Mostly, I use my Ubuntu PC, but occasionally, I use my Windows 8.1 PC. As a result, I save my files to an USB stick.
For example, I write a document in LibreOffice on Ubuntu and subsequently, I reformat the same document in Microsoft Word, because I like the titles and headings better. The same goes for spellchecking. I read elsewhere on this forum that it can be harmful to use the same USB stick on both a Windows and a Ubuntu computer. I want to know whether Windows files can corrupt Ubuntu files and vice versa?