Moving on According to this database, only 10 perfumes with Pepperwood have been released since 2010
Our Tobacco-Free Blunt Wraps never contain nicotine
Am J Physiol Lung Cell Mol Physiol 296:L839L848 van der Toorn M, Slebos DJ, de Bruin HG, Gras R, Rezayat D, Jorge L, Sandra K, van Oosterhout AJ (2013) Critical role of aldehydes in cigarette smoke-induced acute airway inflammation
So instead of using those, they made their own custom e-liquids, with 9 mg/ml benzoic acid, 10 mg/mL benzaldehyde (a chemical flavoring) and nicotine
The remaining nine studies were found to have a moderate to high risk of bias 31-36,38,39,41,42