Is there something in the air there?

A giant odorous cloud billowed over UC Santa Cruz's Porter Meadow on Saturday as a few thousand people took a bong hit or two or three during an event that's evolved into an international holiday for marijuana smokers.

Hoards of mostly college-aged men and women streamed into the grass field in a valley near College Eight throughout the day to celebrate and consume copious amounts of marijuana on April 20 -- a date some call "Weed Day" that has come to symbolize a free-for-all smokefest...

Full story at http://www.santacruzsentinel.com/localnews/ci_23072047/thousands-light-up-at-uc-santa-cruz-celebrate

There definitely seems to be something in the air:
  
Or maybe it's in the ground: