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Is It Really Possible to Eliminate Cannabis Smell?

Is It Really Possible to Eliminate Cannabis Smell?

By Grow How

It’s hard to imagine anyone not having a thing for the characteristic whiff of quality cannabis. There’s something about the fragrance of fresh cannabis that immediately transports you in your thoughts to a better place.

Unfortunately, both for legal reasons and a case of common courtesy, it’s often necessary to declare war on cannabis smells. Particularly if looking to grow cannabis plants somewhat infamous for their aromas. Purple Kush, Sour Kush, Gorilla Glue, Sour Candy, AK47, Cookie Monster – all the kinds of strains that pack a heavy punch on the nose.

But when dealing with such hard-hitting cannabis strains, is it really possible to completely eradicate cannabis smell? Or for that matter, deal with it effectively enough to keep your indoor grow space under wraps?

The answer…well, it all depends on what you’re growing, how much you intend to grow and the limit to which you’re willing to invest in odour reduction. Still, with the technology and various associated devices on the market today, successfully eliminating cannabis smell is a distinct possibility for any home grower.

Active carbon filters

Worldwide, the most popular products and devices used to keep cannabis smells under control are those built around carbon filters. What makes the active carbon filter uniquely effective is the way in which it is designed to physically remove odours from the air. When the air passes through the filter, the properties of the carbon trap the particles responsible for the unwanted smells. The air passes out the other side, largely free of these particles and smelling much cleaner and fresher.

Active carbon filters are typically used in conjunction with wider ventilation and extraction systems, powered by fans. If a single carbon filter isn’t enough to get the job done, you can always double or triple your efforts by installing multiple filters. In addition, the quality of the carbon filters used will have a marked impact on their effectiveness. Even the best carbon filters have a limited lifespan, though can have a huge impact on cannabis smells and really couldn’t be easier to use.


The debate as to whether or not ozone generators are safe to use in indoor grow spaces continues to rage. For every professional endorsement you come across, you’ll find another report warning of their potential dangers.

They can certainly do a great job eliminating odours, but haven’t exactly earned the widespread approval of the cannabis community. If you do decide to go ahead with an ozonizer therefore, be sure to proceed with caution.

Free-Standing Air Filters

More brands than ever before are manufacturing and launching their own unique free-standing air filters for the home. In most instances, these simple plug-in units feature HEPA filters, carbon filters, UV light filtration and all manner of unique features and functionalities.

In terms of effectiveness, free-standing filters for the home are typically designed to clean and purify the air in normal living spaces. They’re not necessarily equipped to cope with the demand of large and pungent indoor cannabis farms. Potentially useful if you’ve just a few plants, but not if you’re operating a serious grow-space.

Anti-Odour Gels, Blocks and Air Fresheners

Last but not least, the problem with most gels, blocks and air fresheners in general is the fact that they aren’t designed to eliminate odours. Instead, they simply exist to mask pungent smiles by releasing different and even stronger smells into the air. Not only can this be unpleasant, it can also be a tell-tale sign of whatever it is you’re trying to hide.

Realistically therefore, the very best approach to odour control is to combine a variety of tried, tested and trusted methods together. Carbon filters usually score top-points, though the installation of a free-standing filter and a couple of all-natural air fresheners could also prove helpful.

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