Most of the people request regarding how to test K2 paper and how to detect K2 sprayed on paper simply because K2 Liquid on paper or k2 spray on paper has no aroma and it is nondetectable since k2 paper is odorless and colorless you can just take a look https://modernbookmarks.com/story17023598/the-5-second-trick-for-liquid-k2-spray-diablo