Country pop singer Jessie James Decker has given frequent flyers a new talking point: what to do when a stranger's bare foot claims your armrest. She posted an Instagram video showing herself holding her nose, taking aim with a small mint-green spray bottle, and spritzing the offending foot. It vanished quickly, and she covered her mouth laughing. Her caption pulled no punches — "Someone's foot smells so bad on the plane" — and she asked followers how they would have handled it.

Some commenters assumed the foot belonged to her husband, former NFL player Eric Decker, and that the whole thing was staged. She shut that down, replying: "Have you seen Eric's feet? Toeeeee UP." Decker, whose 2017 album Southern Girl City Lights topped Billboard's country albums chart, has some family history with airline drama too — her sister Sydney Rae Bass is married to Anthony Bass, the pitcher who publicly complained that United Airlines made his pregnant wife clean up their child's spilled popcorn.

The armrest battle is nothing new. Back in April, an American Airlines first class passenger shoved a woman's feet off his armrest, only for her to prop them up on the window instead. Suggestions flying around that incident included spraying cologne at the foot — exactly what Decker ended up doing. The fact that these videos keep surfacing says something: plenty of travellers treat the cabin like their living room, and plenty of fellow passengers would rather escalate creatively than have an awkward conversation.

So what is the sensible move? Most of us don't carry a novelty spray bottle. Ask the passenger directly to move their foot, and if they refuse, get a flight attendant involved. Some commenters argue crew shouldn't have to referee seat disputes, but keeping the peace in the cabin is part of the job, and a neutral third party is usually faster and less embarrassing than a standoff. The basic rule is simple: your body — and everything attached to it — stays within your assigned seat's space. Armrests, tray tables and windows are not shared footrests.

Why should a holidaymaker care about a celebrity's viral moment? Because it's a funny entry point to a real problem. Seat space is tighter than ever, and a bit of mutual etiquette goes a long way: keep shoes or socks on, don't sprawl beyond your seat, and if a neighbour crosses the line, address it calmly or call the crew rather than turning it into content. If nothing else, the video is a reminder that someone, somewhere, is always watching — and might have a spray bottle.

First reported by View from the Wing.