Remove &nbsp from summernote

Have a summernote field, at times my staff will paste information from another site. Copies the format without any issues. However, upon saving, I will see " &nbsp" in some of the data. All other tags are fine so I cant use the strip tags and I also cannot use the replace feature. Any thoughts?

Obviously I could have them use the code view in summernote and remove it but thats an extra step I doubt anyone will do.