This is a linkpost for https://dyno-might.github.io/2020/09/14/what-happens-if-you-drink-acetone/
I drank acetone in 2021, which was plausibly causally downstream of this post.
I think you missed the most interesting effect, which is that ingesting it would put you into some sort of ketosis or at higher levels: ketoacidosis.
I'm curious about the comparison to drinking isopropyl alcohol (rubbing alcohol) instead, which is gradually metabolized into acetone (the actual psychoactive ingredient) inside the body. If you drink the same amount then gradual seems safer, but I'm not sure if it actually has a bigger difference between active dose and LD50 (or active dose and severe gastrointestinal inflammation).
A breath smelling of acetone can also occur when someone is losing weight very fast (extreme diets or the beginning of an eating disorder). An interesting tidbit.
I’m surprised to learn that the answer seems to be nothing much.
https://www.ccohs.ca/oshanswers/chemicals/chem_profiles/acetone.html
Question: Should you drink acetone?
Answer: No.
But, out of interest, what if you did?