The Sploof Guide

Last verified: April 2026

What a Sploof Actually Does

A sploof — sometimes called a smoke filter or “smoke trap” — is a small, handheld device you exhale through after taking a hit. The filtration media inside captures the particulates and adsorbs the volatile terpenes that carry cannabis odor, releasing air that is (in a good unit) nearly smell-free. Sploofs don’t address the smoke from a burning joint or a smoldering bowl, only your exhale. For full coverage, pair one with a HEPA-plus-activated-carbon room purifier.

The technology breaks into two categories: activated carbon, which chemically adsorbs terpene and aromatic molecules, and HEPA fiber, which mechanically traps particulates. The best commercial sploofs combine both.

Smoke Buddy — the default pick

The Smoke Buddy is the most widely owned sploof in North America for a reason. It uses a sealed filtration chamber filled with activated carbon and ceramic beads, claims approximately 99 percent elimination of exhale odor, and retails for around $30 or less. The original model is rated at roughly 300 uses before the filter saturates; the Junior is smaller and rated for fewer.

• Pros: very effective, inexpensive, widely available, discreet.
• Cons: once the filter saturates you replace the whole unit, not just the cartridge.
• Best for: anyone buying their first sploof.

Sploofy Pro II — the long-haul pick

The Sploofy Pro II uses a replaceable HEPA cartridge inside a durable plastic body. You keep the body, buy fresh cartridges, and generate roughly the same airflow and odor reduction as a Smoke Buddy — but across years rather than months. It’s slightly larger and slightly pricier up front, but cheaper per puff if you’re a regular consumer.

• Pros: lower long-term cost, less landfill, consistent performance.
• Cons: larger footprint, requires tracking and buying cartridges.
• Best for: daily consumers and anyone with strong preferences about waste.

DIY Dryer-Sheet Sploof

The oldest sploof in the book: an empty paper-towel or toilet-paper tube packed with unused dryer sheets, a dryer sheet stretched over the exhaust end, secured with a rubber band. You exhale through the open end and the dryer-sheet fragrance masks (not eliminates) the cannabis smell.

This is genuinely better than nothing in an emergency. It is also significantly less effective than a commercial sploof. Dryer sheets mask with laundry fragrance rather than adsorbing odor molecules, so a sensitive nose will still identify both “weed” and “dryer sheets” — a combination most adults recognize instantly from dorm life. Use it while you wait for the Smoke Buddy to arrive; don’t use it as your permanent apartment strategy.

When to Replace

Sploofs wear out. A Smoke Buddy starts letting visible vapor through somewhere between 200 and 500 uses depending on how hard you hit and how humid your environment is. A Sploofy Pro II cartridge has a similar lifespan before it needs swapping. Signs it’s time:

• Visible vapor emerging from the output side.
• Cannabis smell detectable at arm’s length after an exhale.
• Dramatically reduced airflow (the filter is physically clogged).

Pairing and Limits

A sploof handles exhale, not side-stream smoke. If you’re smoking a joint, roughly half the odor you generate comes from the smoldering tip between puffs — which no sploof can capture. For a joint session, a sploof alone is not enough; add an IQAir HealthPro Plus, Austin Air HealthMate, or Winix 5500-2 running continuously near the smoking area. For a one-hitter or a bong (which burns only during the hit), a sploof alone often does the job. See our full apartment smoking guide for the complete stack, and our odor products page for Ozium, Cannabolish, and the rest.