[TYPO3-english] Weird characters on pages

[Lamb, Brian]

Hi all, 

I'm working on a typo3 installation that has existed for sometime. I've recently noticed that some pages have odd characters in them such as —. 

I've looked in the database and it appears those characters are saved in the database. 

My question is how could this have possibly happened and is there anything I can do aside from running an 'UPDATE' command on that field?

Thanks, 

Brian Lamb