Synthetic cannabinoids are human-made mind-altering chemicals that are either sprayed on dried, shredded plant material so they can be smoked or sold as liquids to be vaporized and inhaled in e-cigarettes and other devices. These products are also known as herbal or liquid incense.,What does k2 smell like? K2/Spice powder looks similar to potpourri or tobacco. Its a dried plant material. Manufacturers and dealers typically cut this greenish-brown dried plant material finer than marijuana.What hash smells like?What does hashish smell like? Hashish is a distilled, highly concentrated form of marijuana product. Its made from the compressed resin of the cannabis plant. Hashish smoke smells similar to marijuana smoke — an earthy scent mixed with notes of fires and ash.