It’s not the first time the dentist has been accused of driving with more than 100 canisters of nitrous oxide.

A Houston dentist was arrested with more than 100 canisters of laughing gas in his car.It is used in his line of work but ...

Police records show a nitrous oxide history beginning in 2017, with recent arrests for possession last October and 112 gas canisters discovered on him in Houston the following month.

Nitrous oxide is also self-administered — you’ll either hold a mask over your nose and mouth or breathe through a mouthpiece to inhale in the gas (a trained nurse can show you how).