When he stopped, the officer said Pedlar, identified as a doctor of dentistry and professor at UT Health, had been inhaling nitrous oxide, commonly known as "huffing," while trying to evade police.

A Houston dentist and university professor ... When officers checked his car, they found 107 canisters of nitrous oxide—one still attached to a mask and reportedly ice-cold, indicating recent ...

Candi Morris knows nitrous oxide well; as the office manager at Dental Expressions in Moore, she’s familiar with its use as “laughing gas” to calm anxious patients. But outside the dentist ...