Snopes says this

What’s True Tobacco enemas were a real and at one time popular medical practice thought to have been able to revive people who had drowned or were otherwise catastrophically ill. What’s False However, the phrase “blow smoke up your ass” appears to have its origins more recently, in the 1960s, and there is no evidence linking it to the long-ago practice of tobacco enemas.

I wish more people paid attention to snakeoil history. So many people today reject modern medicine in favor of holistic medicine that hasn’t gone through double blind studies.

Instead, you have soccer moms shoving things in their prison wallet because Gwyneth Paltrow tells them to. Or whatever the fuck Alex Jones and Joe Rogan pedal peddle to toxic masculinity cucks.

Wasn’t blowing smoke up someone’s ass an old way to revive them after drowning

I know it’s bad for me, but I can’t resist a nice smoke enema after a long butt chug.

Aztec priests used to use tobacco in enema form for psychedelic adventure. Not smoke, though; water.