Does anybody know what this is?

[clockwork.satan]

Methane detector?

...Horses DO fart a lot, so perhaps it emits a shrieking sound if it reaches knock-out levels of fartgas?

 

[Cosimo]

Methane detector?

...Horses DO fart a lot, so perhaps it emits a shrieking sound if it reaches knock-out levels of fartgas?

You get 9/10 for originality.