Snapchat's disappearing message feature helped enable the sale of fentanyl to teenagers who went on to die of overdoses, a lawsuit claimed."The product design of Snap, most notably its disappearing message feature which is engineered to evade parental supervision and law enforcement's detection and acquisition of criminal evidence, was the direct and proximate cause of the untimely and tragic deaths and injuries at issue in this complaint," the filing said.A Snap spokesperson told Insider "several allegations in the complaint appear to be wholly inaccurate," but did not give further details.The spokesperson said Snap used "cutting-edge technology to proactively find and shut down drug dealers' accounts, and we block search results for drug-related terms, instead redirecting Snapchatters to resources from experts about the dangers of fentanyl."The couple said their son communicated on Snapchat with a dealer called Aj Smokxy who supplied him with fentanyl, according to subpoenaed documents, the lawsuit said."