A Kiss smells like...

A bad kiss smells like old, stale chinese food. it smells the way mexican food sits in your mouth after a few hours when you ate it. 

wet dog. 

or old food crumbs on the corners of your mouth. 

a good one smells like chapstick. 

minty or fruity lipgloss and gum. 

cool fresh air after a day inside.

unexpected rain. 

it smells like good DNA.