It
looks like the curly backtick (from word generally, why do people prep stuff in office before posting to a plain text editor I'll never understand).
You should be able to use find/replace syntax to replace ’ with ' via MySQL.
Common replaces are:
“ = left quote = “
†= right quote = ”
‘ = left single quote = ‘
’ = right single quote = ’
— = en dash = –
– = em dash = —
• = hyphen = -
… = ellipsis = …
