MJ Arsenal Houdini Smoke Filter

The MJ Arsenal Houdini is a disposable carbon-filtration smoke filter — sometimes called a sploof — that captures airborne particulates and odors from each exhale. Designed for discreet use in apartments, offices, dorms, and other shared spaces, it’s a pocketable MJ Arsenal accessory that lets you smoke or vape without leaving a lingering smell behind.

The Houdini’s compact 3.6″ body holds activated carbon and a smoke-reclamation chamber. Exhale through the mouthpiece and the filter traps the visible smoke and most of the scent, releasing nearly clear, near-odorless air. Each filter is rated for roughly 200 exhales — performance varies with usage and material — and once it’s spent, you replace it. It’s available in four finishes (Biodegradable Plastic, Cactus, Blush, Onyx) so you can match it to your stash gear.

FAQs

• Does the Houdini eliminate all smell? It captures the bulk of the visible smoke and most of the odor, but it isn’t 100%. Strong sessions or back-to-back hits will still produce some residual smell — pair it with a quality alternative like the Yocan Air Filter for high-volume sessions.
• How many exhales does one filter handle? Roughly 200, per MJ Arsenal. Heavier hits, dab vapor, and humid environments will shorten that window.
• Can I use it with a vaporizer? Yes. It works with dry-herb vapor, concentrate vapor, and combustion smoke. Vapor sessions tend to extend filter life because there’s less particulate.
• Is it reusable? No — the Houdini is a single-use disposable. When exhales start passing through more visibly, swap to a new one.
• Does it work for cigarette or cigar smoke? It’s designed for cannabis smoke and vapor. Tobacco smoke contains tars that clog carbon faster, so expect significantly reduced filter life.
• What’s the difference between the four finishes? All four use the same internal carbon and reclamation system. The Biodegradable Plastic version uses a bio-based shell; Cactus, Blush, and Onyx are colorways of the standard plastic body.
• How do I dispose of a spent filter? Treat it like household waste. The Biodegradable Plastic version is designed to break down faster than conventional plastic in commercial composting conditions.

Total beginner? Read this

• What a sploof does: A sploof is a small filter you exhale through. Activated carbon inside the device traps the odorous compounds and visible smoke before they reach the room.
• Why people use one: If you can’t crack a window or you live with people who don’t want to smell smoke, a personal filter is the easiest way to keep your sessions discreet.
• How to use it: Inhale your hit normally, then exhale fully through the Houdini’s mouthpiece. Don’t inhale through it — it’s a one-way device.
• How to know when to replace it: When you start seeing visible smoke pass through the exhaust end, or when the device starts smelling stale, the carbon is saturated and the filter is done.
• Where it fits in your kit: It pairs naturally with any portable rig, dry-herb vape, or pipe. Browse other compatible smoking and vaping accessories to round out your setup.

Specs

• Brand: MJ Arsenal
• Type: Personal smoke / vapor air filter (sploof)
• Filtration: Activated carbon + smoke reclamation chamber
• Capacity: Approximately 200 exhales (varies with use and smoke type)
• Reusable: No — single-use disposable
• Dimensions: 3.6″ x 1.7″ x 0.8″
• Packaging size: 3.8″ x 1.9″ x 1.0″
• Variants: Biodegradable Plastic, Cactus, Blush, Onyx
• Compatibility: Dry-herb smoke, dry-herb vapor, concentrate vapor
• Country of origin: Designed in the USA