From the News-Herald:
Police discovered a man and woman inhaling nitrous oxide at 2:30 am but this was not the most curious aspect of their find. The man, who claimed to be a teacher, had stashed 70 cans underneath the front seats.
Baffled, police officers were uncertain if their apparent huffing breached any laws. Consequently, they drove the couple home without a citation. Further inquiry showed that state law lists inhaling with the intent to achieve a high as a 90-day misdemeanor offense.
In fact, the man is a substitute who taught approximately 30 hours after his run-in with police. However the school superintendent indicated the man's services are not needed saying, he “won’t be here anymore.”