The skunky smell of cannabis may be going out of style. NPR’s science correspondent Pien Huang visited the grow facility for District Cannabis, which sells weed in Washington D.C. and Maryland. On her tour, she learned why cannabis smells the way it does. Plu…

The District Cannabis grow facility in Hagerstown, Md.
Pien Huang/NPR
The skunky smell of cannabis may be going out of style.
NPR’s science correspondent Pien Huang visited the grow facility for …