Eight years ago, while attending college in Florida, Meg Caldwell began using nitrous oxide recreationally. Her use escalated during the Covid-19 pandemic.
20-year-old bar owner Huynh Van Luc directed his staff to sell nitrous oxide (N2O) to attract customers and supply other businesses, estimated to have earned hundreds of billions of dong.
Nguyen Truong Hoat, owner of The Black Lounge bar, allegedly supplied nitrous oxide to patrons and other venues, generating tens of billions of dong in profit.