by Jorge Cervantes
Fragrance
Cannabis has the most pungent fragrance from when it begins to flower through the end of harvest. Before flowering, many strains of growing marijuana have little fragrance that the exhaust fan can carry outdoors discreetly. A good exhaust fan, vented outdoors, is the first step in cannabis odor control and the easiest way to keep the house from reeking of fresh marijuana. neutralize odors with masking agents and charcoal filters. Masking agents are most effective at exhaust exits, hallways, and doors. Charcoal filter actually remove unwanted fragrance from the air before it is expelled from the room.