What do boogers smell like? Hey...we all smell them.

It's very unladylike to pick and tell....it's snot something I've Heather done heave'r.  :(

Since I do cigarettes one could say 'smoked boogers' -tobacco aroma and flavor. 

i have three nose piercings and let me tell you there is nothing worse than the smell of sebum/dead skin/bacteria 

if i dont clean them daily my boogs smell like sour garbage because of this

When they smell like dirty pennies then I know I'm bleeding inside. Also I sneeze a lot, so it's hard to miss.

The best part is swallowing/saving them for later, then hacking them back up and getting the full effect while scurrying to a place where it can be spit out.  I don't suggest swallowing a 2nd time, though, as a double-hack would just be gross. :P

They smell like tears.

not sure how to describe it