Is this the worst inflight foot infraction yet?

It was a nightmare at dirty-thousand feet.

A passenger raised a stink online after a fellow flyer allegedly used a fellow traveler’s headrest as a footrest — causing a noxious odor to circulate the plane.

They posted a photo of the mile-high pedi crime in the Reddit forum r/mildlyinfuriating, where it garnered a tsunami of disgusted responses.

According to the original poster, named seefooddiet2200, the inconsiderate female passenger had reportedly propped their “smelly feet on the headrest” during the unspecified flight.

Accompanying photos show the unnamed cretin resting their sock-clad trotters on the back of their fellow passenger’s seat like it was an inflight ottoman.

To make matters worse, the air vent was “blasting” right by her tootsies, which had the effect of “wafting” her foot funk around the plane, per the sole survivor.

The toe-diferous space invasion didn’t fly with the Reddit commentariat. “I would be the one to tell her that her feet smell and to put them away for the sake of everyone,” declared one commenter.

Another wrote, “So many do not know how to behave in public, nor do they consider how their behavior impacts those around them. Just so self-absorbed…”

“And that kids is why you aren’t allowed to have a knife onboard,” quipped a third, while another gawker fumed, “Flying has just turn into a s-‍ -t show of freaks.”

Meanwhile, one armchair samaritan suggested, “Ask the flight attendant and they will make them put their shoes on.”

This a-sock-alyptic act earned the passenger a spot on the Mount Olympus of pedi criminals, which currently seems as overcrowded as Mt. Everest.

Past footsie infractions include a Delta passenger who scrolled through movie options with his bare feet, the woman who used her naked hoofs to draw her window shade, and a flyer who stuck their “gnarled troll toes” under the seat in front of them.

Things got so out of foot that one TikTokker even posted a video demonstration of how to make fellow flyers keep their feet to themselves.

In it, he could be seen dumping water on a passenger who allegedly propped their naked foot up on his armrest.