---
title: This improbable membrane can trap flies in a jar—and odor in a toilet — HIGH T3CH
url: https://hight3ch.com/this-improbable-membrane-can-trap-flies-in-a-jar-and-odor-in-a-toilet/
date: 2018-09-05
---

# This improbable membrane can trap flies in a jar—and odor in a toilet

Reverse filter lets bigger things through, hold back smaller things.