On: Laser-based device can scan almost any sample of gas and tell you what's in it

[aj7]

One time at the laser show, the booth across from us had a methane analyzer.

You could tell when people farted.

[throwup238 → aj7]

Simple hand held methane detectors have been around for a few decades.

This was used to great effect in the Kenny VS Spenny episode, Who Can Blow the Biggest Fart: https://youtu.be/ash2NzL1IHo

(It’s a Canadian show)