The Brief: Illegal drugs in powder form are known as "nose candy." The term is typically refers to cocaine.
Nose candy refers to an illegal substance or drug that is snorted or inhaled in powder form. Typically nose candy is used in reference to cocaine.
According to Urban Dictionary, the term is related to Colombian nose candy and originated with notorious drug lord, Pablo Escobar. He used the term, “Colombian Nose Candy” instead of cocaine when he thought the Drug Enforcement Administration was bugging his phones.