Main female protagonist Alexia is taken out by a vial of chloroform smashed on the floor. She wakes up bound and gagged. Nice artwork from this Victorian era themed manga. https://mangaseeonline.us/read-online/Soulless-chapter-5-page-1.html

Very quick chloroform kidnapping. http://m.mangatown.com/manga/handsome_girlfriend/v08/c033.1/31.html

https://kissmanga.com/Manga/Witch-Workshop/Ch-057?id=438120

Dude chloroforms a girl. She’s rescued by another hot dude. From https://www.tohomh123.com/yizhichonghunshenbilaogongrebude/ Ch 27, 28

From a chinese webcomic https://www.tohomh123.com/gongjuedeqiyaoweihunqi/ Chapters 18 and 19 depict a noble woman getting chloroformed and kidnapped.

Source https://www.mangareader.net/the-strongest/11/5

A blue haired girl is kidnapped by a mad villain. She wakes up chained and gagged to an operating table. The villain taunts her. Luckily, she is rescued.

Sean Galloway’s Shadow Pirates webcomic. In chapter 10, Ginger is kidnapped by a team of bad guys. She’s shown getting chloroformed, and later wakes up tied to a chair. Very good artwork! https://m.webtoons.com/en/fantasy/shadow-pirates/chapter-10/viewer?title_no=1455&episode_no=10

Diana and a friend are gassed on a space transport.

Kaoru makes her escape from the Hunters Guild by drugging a maid and changing her disguise. https://mangakakalot.com/chapter/potiondanomi_de_ikinobimasu/chapter_4.1

Main female protagonist finds herself on the "forbidden" floor of her school. Some unknown assailant hand gags her, then knocks her out with chloroform. https://mangakakalot.com/chapter/zx920300/chapter_3 Source: http://westerncivilization.trifecta3.net/viewtopic.php?f=20&t=8843

One of the girls sniffs a chloroform rag and passes out. She spends the rest of the issue unconscious and carried by the others.

A woman is hit with an entrancing dust.

Elvira gets darted and tied to a chair.

Black Canary and Zatanna lie unconscious.

A starfish controlled Black Canary is KO'd by Batman.

A woman chloroforms her friends in a plot to swap bodies with her.

Vampirella is captured and chained to a wall.

Adam and Serena are gassed by a mysterious assailant.

Unconscious carry featured on the cover of this one-shot comic adaptation of Roger Corman's classic film.