endcall.org / lab

THE VENTBreathe easy from both ends

// activated carbon flatulence filtration system

A wearable gas filtration system that neutralizes odor at the source. Three form factors. One mission. Let it go.

// mechanism of action

How It Works

01

Gas Builds

Normal intestinal gas pressure increases. Average human produces 0.5–1.5 liters per day across 14–23 events.

02

Valve Opens

Proprietary one-way silicone valve allows gas to pass outward while maintaining a solid/liquid seal.

03

Carbon Filters

Activated carbon disc adsorbs hydrogen sulfide, methanethiol, and dimethyl sulfide — the compounds that stink.

04

Clean Exit

Odorless, silent release. Nobody knows. Not your date. Not your coworker. Not your yoga instructor.

The Science: Activated carbon works via adsorption — gas molecules bind to the carbon's massive surface area (1 gram = 3,000 m² of surface). This is the same technology used in military gas masks, water purification, and ostomy bag filters. The Vent applies proven filtration science to an underserved anatomical market.
// product line

Three Ways to Vent

Premium / Insertable

Cork

$39.99 — Filter refills $12.99 / 30-pack

The flagship. A slim, ergonomic insertable device engineered for all-day comfort and total odor elimination. Medical-grade silicone with a replaceable activated carbon micro-filter cartridge.

  • MaterialMedical-grade platinum-cured silicone
  • FilterActivated coconut carbon disc, 12mm
  • Filter Life24–48 hrs per cartridge
  • ValveOne-way silicone duckbill valve
  • SizesS / M / L
  • SterilizationBoil, UV, or dishwasher safe
  • Weight~8g (inserted, with filter)
  • FDA ClassClass I (exempt, similar to menstrual cup)
Everyday / External

Patch

$14.99 / 30-pack

The no-commitment entry point. A discreet adhesive carbon filter pad that sticks directly over the source. Hypoallergenic, skin-safe, and invisible under clothing. Peel. Stick. Forget.

  • MaterialMedical adhesive + woven carbon layer
  • FilterActivated carbon non-woven textile
  • Adhesion12–16 hrs, sweat-resistant
  • SizeOne size — flexible 55mm oval
  • Thickness1.2mm — undetectable under clothing
  • Skin SafeHypoallergenic, latex-free
  • DisposalSingle use, biodegradable
  • FDA ClassOTC consumer wellness product
Passive / Wearable

Sleeve

$54.99 — Replacement liners $19.99 / 5-pack

For the insertion-averse. Performance boxer briefs with a built-in activated carbon filtration panel. Washable, breathable, and engineered for the person who wants protection without thinking about it.

  • MaterialBamboo modal blend + carbon panel
  • FilterRemovable activated carbon liner
  • Liner Life~30 washes per liner
  • SizesXS – 3XL
  • CutsBoxer brief, bikini, thong
  • CareMachine wash cold, hang dry
  • Carbon PanelRear-integrated, snap-in/snap-out
  • FDA ClassConsumer apparel (no classification needed)

"Let it go."
— The Vent

// subscription
★ LIMITED EDITION PACKAGING ★

The Boof Box

Monthly subscription. Everything you need. Delivered in discreet (or hilariously indiscreet) packaging. Choose your level.

30x Cork Filters
30x Patch Singles
1x Sleeve Liner
Boof Stickers
Mystery Merch
// market opportunity

Everyone Farts

8B
Total addressable market (humans)
14–23
Average farts per person per day
$4.2B
Global digestive health market (2024)
100%
Of first dates ruined by farts (est.)
// regulatory + safety

Built for Real Bodies

FDA Pathway

Cork targets Class I medical device classification (exempt), comparable to menstrual cups and rectal dilators. No 510(k) required. Patch and Sleeve fall under consumer wellness — no FDA classification needed.

Materials

All body-contact materials are ISO 10993 biocompatible. Platinum-cured silicone (no BPA, phthalates, or latex). Activated carbon sourced from coconut shell. Hypoallergenic adhesives on Patch.

Testing Protocol

Odor reduction efficacy measured via GC-MS (gas chromatography–mass spectrometry) against H₂S, methanethiol, and dimethyl sulfide at physiological concentrations. Target: >95% reduction.

Safety

One-way valve prevents pressure buildup. Cork is designed to never fully occlude the rectal canal. Smooth, rounded edges. Retrieval cord on all insertable models. 100% body-safe at any duration.