Krypto-Mite?

I brought some Vegemite into work. It's been sitting in my cube for a whole week.
People come up, smell it, and make funny faces. But still - no one has dared eat it.
Most say "sure, I'll try it" but when it comes to the crunch, they all back out.

Come on - how could something that puts a rose in every cheek & is made from leftover beer yeast be a bad thing??