html formatting in fields of pdf_template

I’m making pdf quotes using the Quotes module with an html template. This works great, but I’d like to have a custom field (notes) that can have some formatting in it (superscript, subscript, etc) When I enter content into the notes fields in the quote, if I enter html, it gets escaped out. Is there a way to enter formatting information into a field? Ie, I 'd like:

Notes: “Add your own H2O.” and a custom content in the Quote that shows up as H[sub]2[/sub]O in the pdf quote.