House Bill No. 1933, also known as the "Maddix Bias Act," aims to regulate the sale and use of nitrous oxide in Oklahoma. The bill defines nitrous oxide and prohibits its sale to individuals under the age of twenty-one, requiring proof of legal age for purchases. It establishes penalties for violations, including misdemeanors punishable by up to ninety days of imprisonment or fines of up to $5,000. The bill also addresses the unlawful distribution of nitrous oxide, particularly when more than sixteen grams are involved, and sets forth additional penalties for those who sell drug paraphernalia to minors.

The legislation includes several exceptions, allowing for the use of nitrous oxide in medical or dental care, as well as its sale in food products, automotive applications, and for industrial purposes. It also specifies that nitrous oxide cartridges used for culinary purposes are exempt if purchased from commercial suppliers. Furthermore, the bill mandates the suspension of business licenses for repeat offenders who violate the provisions regarding the sale of nitrous oxide. The act is set to take effect on November 1, 2025.