Need to suppress records if junk characters instead of text

I'm creating a report using data from a dbase that allows attachments.  So, in CR, John Smith's "Notes" may be "Met with John to discuss..... " or it may be "{00000skdjfli...} - basically junk characters - if there's an attachment in the dbase instead of text that staff has entered.

How can I suppress the field if CR is bringing junk characters from our dbase due to an attachment, and only display the field results if there's actual text in there?