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growing marijuana smell

Growing marijuana smell

The smell actually comes from terpenes, tiny volatile molecules created by the cannabis plant. These terpenes are the aromatic component of the plant’s essential oils. Biologically, they function as deterrents for predators like insects or mammals. While cannabis plants produce more than 1,000 different types of terpenes, only a few can be distinguished by the human nose. Two prominent examples are limonene and pinene.

At wine tastings, connoisseurs might describe the liquid offerings as oaky or fruity, with a hint of blackberry or walnut etc. In the cannabis smell study, participants used similar sensory traits for pot.

Why is Cannabis Odor Control Important?

According to a leading cannabis user magazine, Leafly, one of the most popular and efficient ways to control cannabis odor in a growing environment is to use a carbon filter.

Study Describes Cannabis Smell

The cannabis plants’ odor-causing molecules, terpenes, can effectively be trapped by a deep-bed activated carbon filter. The extremely porous activated carbon adsorbs the volatile organic compounds and traps them on its vast surface area.

Growing marijuana smell

Biofiltration systems use live materials such as bark and mulch to collect and biologically degrade odors and contaminants. While biofiltration is common in large operations like waste facilities, it’s not generally recommended for grow facilities as it takes up valuable growing space and needs to be carefully controlled.

Proper odor control neutralizes grow room vapors and mitigates air contaminants. Choosing the most efficient odor control system depends on the demands of the grower and cultivating process. It’s important to implement odor control systems that offer maximum effectiveness and efficiency. Here are 8 common ways cannabis cultivation businesses are implementing odor control:

With all fog, mists and vapors, chemicals are released into the grow room exhaust stream, introducing a foreign element that needs to be carefully managed to prevent harm to plants and people.

Commercial grow facilities depend on high-quality air filtration to help produce their best possible yields. HVAC systems are commonly used for air filtration but the truth is they’re not powerful enough to filter cannabis odor molecules or contaminated air. HVAC systems are built for heating and cooling the air and aren’t equipped with the proper filter media, technology, or power to control grow room odors.

As legalized cannabis cultivation and usage are introduced into communities across North America, there are state, regional, and local regulations being established to control cannabis odors through permits, property use, and nuisance rules. Most states now require odor mitigation plans to apply for a license. Commercial grow facilities are being sued and even shut down due to violations, environmental concerns, and neighbor complaints. Cultivators in multiple states including Colorado and California have been taken to court by neighbors for cannabis odor-related issues under the Racketeer Influenced and Corrupt Organizations (RICO) Act.

The most common filter media for VOCs is activated carbon. According to, “these are hands-down the best option for controlling marijuana grow room odors.” Activated carbon filtration systems are designed to collect and remove odor molecules through adsorption. By forcing air and odors through 16 carbon canisters, the CleanLeaf Odor Series ensures maximum adsorption.

The CleanLeaf Odor Series was specifically engineered for cultivators to eliminate odor from even the most potent flowers while protecting them from contaminants like mold and mildew.