Anybody can cut cocaine up with any white powder, or boric acid flakes to look like its mother of pearl or fishscale or ivory flake, from chalk to clothes washing powder, iocaine, caffine powder, amphetamine, also to my knowledege some people add human or bull or horse sperm to the cocaine usually dried sperm and usully only to users/customers who like and want it in their powder for the scent and taste, if you purchase cocaine from some horse racing stables in the u.k. the cocaine has dried horse sperm mixed in it for sometype of flavour or scent espically if it is consumed in an orgy of sex as well as drugs, as a fetish!