interior of plane

File photo, ThinkStock

Air travel stinks.

You don't have to tell that to Danielle Belyeu, who recently was stuck next to a passenger with a strong body odor — rotting cheese and onion — on a flight from the Caribbean island of Curaçao to Miami.

"Thank goodness the flight was only a couple of hours," says Belyeu, a travel adviser from Summerville, South Carolina.

Being a travel pro, she came prepared: A lightly scented spray bottle of hand sanitizer held the stench at bay during the flight.

There's a war of scents going on at 36,000 feet, and it's escalating in ways you can't see (but will probably smell). Some passengers are treating personal hygiene as if it's optional. Others are taking matters into their own hands by spraying unapproved scents.  

What are airline policies for smells?

It turns out airlines have rules about smells, but they're problematic.

For example:

American Airlines' contract of carriage, the legal agreement between you and the airline, says it can refuse to transport "persons who have an offensive odor such as from a draining wound."

Delta Air Lines also reserves the right to refuse transportation "when the passenger’s conduct, attire, hygiene or odor creates an unreasonable risk of offense or annoyance to other passengers."

United Airlines has a similar provision, refusing to carry "Passengers who have or cause a malodorous condition."

At the same time, airlines have given themselves a broad license to release their scents on the plane.

A few years ago, United reportedly began using a proprietary fragrance called Landing (orange peel, bergamot, cypress) in its cabins. Delta Air Lines perfumed its planes with Calm (lavender and chamomile). During the pandemic, airlines sprayed the cabin interiors with chemical cleaners that left some passengers with a headache. And don't even get me started on the lungfuls of jet fuel fumes that sometimes waft through the cabin before takeoff.

Like I said, it's a war of scents up there.

Holding their noses

Reports of smelly aircraft have been in the news lately. There was a flatulent passenger on an American Airlines flight from Phoenix to Austin. One witness said it became so unbearable that the flight turned around and headed back to the gate to remove the malodorous traveler.

Many of the smells come from the cargo hold. One frequent offender is durian fruit, with its distinctive odor of honey, sewage and rotting onion. It has forced several planes to make emergency landings. Many airlines ban durian fruit despite its popularity in Asia.

My worst odor experience happened many years ago when I flew from New York to Vienna on a Soviet-made aircraft operated by the Romanian flag carrier Tarom.

I was stuck in the back of the plane, and the moment the "no smoking" lights went out, it seemed like every passenger — including the kids — lit up. The bathrooms were directly behind me, and someone had poured a chemical that smelled like cherry and battery acid into the toilets, which started to overflow within an hour of departure.

It was a long flight.

How to fight back

So what should you do if you encounter a bad smell on a plane? Before you go spraying perfumes and air fresheners — which your airline might not allow — here are a few less invasive strategies.

Say something. Find someone who can help you. A flight attendant might be able to move you to a different seat.

Improvise. That's what Uneaka Daniels, a reading specialist from Bermuda, does when she's sitting next to a passenger with body odor issues. She carries a white scarf with diffusing beads that contain essential oils. Technically, she's not spraying anything.  

And don't be part of the problem. If you think you might create a smell on the plane, refrain from any activity that might stink the cabin up. That includes eating a big Italian dinner with extra garlic, Polish sausage and durian. Definitely, avoid durian.

How to fix the smells

There's a way to call a truce in the odor war on planes, but it will require some leadership from the airline industry.

It starts with creating a common-sense standard for flights and holding everyone to them. The Canadian Centre for Occupational Health and Safety offers some suggestions for creating a scent-free policy.

That means asking passengers to attend to their personal hygiene and refrain from using perfume and cologne before the flight. An airline might also issue a formal policy limiting scented products on the plane. Things like smelly aftershave, essential oils, lotions and soaps would be verboten.

Most importantly, airlines need to hold themselves to the same standard they set for passengers. In other words, no industrial cleaners in the bathroom and no signature scents called "calm," "happy" or "I want to sign up for your addictive loyalty program."

Scents are a serious problem on planes. Strong body odors can literally make you vomit. Chemicals in scented products can create headaches, nausea, upper respiratory problems and skin irritation.

It's time for the scent war to end on the plane. Wait until you land to slather on the Chanel Bleu or douse yourself in lavender oil.

Your fellow passengers thank you in advance — and so do I.

Christopher Elliott founded Elliott Advocacy, a nonprofit organization that helps solve consumer problems. He publishes Elliott Confidential, a travel newsletter, and the Elliott Report, a news site about customer service. Email him at chris@elliott.org.