From the email:
"That sweet flower scent that you described is that of the daphne odora or sometimes called winter daphne."
Cool. I wonder if it's hard to grow... I found the same plant growing outside the Elizabethan Theater in Ashland, OR when I went down this weekend to see Richard III. It made me smile.
Edit: and if you want to know what to look for, look at this... it grows in bushes around MGH, CMU, etc.