Signs like this could be found in the late 1800s/early 1900s, explaining this strange new technology.
(media.piefed.world)
That hit me like a much much worse version of the XKCD comic about somebody's workflow and "please add an option to re-enable spacebar heating."
"I am set in my ways and find that my routine maintains my humours most divinely. Please just re-enable sleepy time CO, sandman soot, and funny fumes."