|Source: NY Times|
Apparently, disgust is the new frontier in emotion research. Disgust may be analagous to fear or pain, functioning essentially a noxious stimulus that keeps us from danger.
Could disgust exist, in part, to keep us safe from the 'cooties'? Perhaps even keeping plague and pestilence at bay?
For a more in depth read, it may be worth checking out That's Disgusting- Unraveling the Mysteries of Repulsion, by Rachel Herz. Click here for the NY Times book review.
I plan on checking this out soon.