2024 No Chemical Composition of JUUL Pods Collected From Students in California High Schools https://pubmed.ncbi.nlm.nih.gov/33712386/ Shamout, Mays North America Observational Exposure High School (9-12) electronic nicotine delivery systems Nicotine Tobacco Adolescents Students School Curriculum JUUL pods collected from 16 California high schools showed nicotine and VG levels inconsistent with commercial products, suggesting possible consumer modification or counterfeit use among students. 2020