For a moment, I thought it was synaesthenia. For better or worse, it was not. But it sure did make my user experience far more vivid, and so I checked up on the technology ; yes, the prototype is out, iSmell from a company named Digiscent. Oh, I know it's been done before in a gimmicky way, but this is the 21st century. We have the technology to make it an everyday experience, one which would greatly enhance the Metafilter user experience. Users would have to, of course, purchase their own iSmells. Then, in making comments, members could - if they chose - pick from among a set list of smells available by means of a simple drop down menu.