The apartment was the villain
The Reddit story that gives the video its title: a man finds notes in his apartment in handwriting he doesn't recognize, suspects his landlord, installs a camera, and wakes to find the footage erased. The answer was 100 ppm of carbon monoxide: he was writing the notes to himself and instantly forgetting. The diary converts the horror story into a 30,000-peso detector purchase, an open-window policy, and the memory of their own gas-leak afternoon spent walking by inertia.
// trace: where this idea came from
- ↳ video diary @ 35:32 (él mismo escribía las notas)
- ↳ video diary @ 43:32 (el enemigo que no se ve)
The story, retold from Reddit in comic-strip order: a man starts finding sticky notes in his apartment with no idea how they got there ▸ 31:50, one advising him to keep his documents safe ▸ 32:48. He suspects the landlord and installs a camera ▸ 32:21; the footage turns up erased while he slept ▸ 33:03. Headaches and memory loss mounting, he goes where you go when nowhere else has an answer, which is Reddit ▸ 33:36, and a commenter connects small room, headaches, memory: check for carbon monoxide ▸ 34:40. He owns a detector, still boxed ▸ 34:59. Plugged in, it reads 100 parts per million ▸ 35:17. He had been writing the notes to himself and forgetting them instantly ▸ 35:32, erasing his own camera included; the landlord was innocent ▸ 35:44. A year later he reports himself improved but with sequelae ▸ 36:19.
el atacante era el aire del cuarto →
The research pass that follows fixes the scale in the record: sustained home readings should never pass 9 ppm ▸ 36:47, above 100 is danger with fast symptoms ▸ 37:46, above 800 threatens life ▸ 37:56. The diary, characteristically, blurs carbon monoxide and the CO2 of two people breathing in a closed bedroom into one invisible enemy, but the conclusions survive the chemistry: his lifelong open-window habit gets vindicated ▸ 38:31, and they’ve met the enemy personally, the afternoon a construction crew ruptured a gas pipe on their street ▸ 41:28 and they spent the next hours walking by inertia, foggy and slow ▸ 42:09.
The actionable ending costs 30,000 pesos: the cheapest detector, uncertified, versus certified ones above 100,000 ▸ 39:46, defended with the era’s best cost-benefit line, “entre eso y morir” ▸ 43:06. What sticks is his summary of why the story haunts: “es algo que uno no ve, o sea, partículas por millón… y se intoxica” ▸ 43:32. Some villains don’t need a face, just a closed window…