Years ago I made some chloral hydrate out of trichloroethylene. The final product has a very sharp, sweet smell, not a good sweet, sort of sickly sweet. The taste was bad, definitely like something you shouldn't be ingesting.
Unfortunately the effects themselves are very hazy to me, I was taking alot of benzos at the time, and I feel like I never experience the true effect of a drug when I'm on benzos. Similarly, I've taken some psychedelics, for instance 2-CT-7 and 2-CT-2, while on benzos and I feel like I can't really comment on their effects since the experience was so hazy and distant to me when I was under their influence.
I think I just went to sleep after taking the chloral hydrate I made, I don't recall what the actual effect even felt like. I probably never even felt an effect, just passed out. I only sampled it a few times because I wasn't so confident that what I made was safe to consume. Using TCE avoids some of the danger of the more common method of making chloral hydrate (which involves a fair amount of lung dissolving chlorine gas) but the TCE I used was hardly lab grade.
In short I can't really comment on its effects but it smelled sweet, but sharper and not as pleasant as ether, chloroform or halothane (instead of throwing them away I used to abscond with the mostly empty bottles of halothane when I worked at an animal hospital).