Pass-Through Paradox

Two Denver-area (Colorado, USA) university employees work in separate but adjacent storerooms. However, there is a connection between these two basement storage rooms: a vent high up on the wall. What could be misconstrued? What could ever go wrong? Puff breaks heighten the suspicions. 

Approx. 2100 words.

If this little tale were a movie, it would probably be rated PG-13 (for marijuana usage).