Especially when you copy text from a site and paste it into the Word, you can see weird formats, fonts, paintings, and effects. It is possible to remove these selections one by one. But sometimes removing effects can be frustrating. Word made a small button for this, maybe you have not even noticed before. In fact, it is enough to select the text and then click on this clear button to return the text to a clean format.
If you want to see a simple way to fix Word punctuation marks, please look here.