if you decide to remove those characters, the following will do it:
ExecutiveSummary.Narrative=REPLACE_PATTERN(REPLACE_PATTERN(ExecutiveSummary.Narrative, '[\x00-\x1F]', ''), '[\x7F-\xFF]', '')
That will remove the 'xF0\x9F\x87\xBa\xF0\x9F' that were in you gif plus any other formatting or control characters.
It will also remove any tabs or new line characters. If those are needed, the REPLACE_PATTERN can be tweaked to keep those.
FYI: here is one of many sites that displays ascii codes: https://www.ascii-code.com/