How to hide your bodily odors after a long flight?

There's good reason why we shower and use deodorant - it's difficult to hide that smell (plus you feel better after one).

However, given that wasn't an option, there are a few key points. The smell is trapped mainly in certain areas on the body - key sweat points:

(source)

So if you want to reduce the smell, you want to target those areas. (Note, those are not directly sweat glands, but represent pores - some for hair follicles, some for sweat, but the two usually have some correlation.)

The body

As shown above, there are certain regions which sweat and smell more.

• If you get a few minutes, go to a washroom and handwash some of the key things. You can't get a full shower, but it'll certainly help, and freshen you up.
• carry a wash-cloth for this purpose, it'll make it easier than using your hands.

• baby-wipes go a long way, take up little room, and disinfect as well.

• Carry an extra can of roll-on deodorant (spray ones will get confiscated by security). Use on targeted areas.

The clothes

Sweat and dirt seeps into the clothing, adding to the layers of stench. Do something about this:

• Keep a spare shirt at minimum, which you can change to, and stuff your dirties inside an plastic bag into your carry-on.
• If possible, carry other spare clothes, targeting those that touch your skin first.

And as a bit of humour at the end, above all, do not try to hide smells by lighting a match on a plane. Heck, don't even take matches onto a plane!

Footnote: even if the general showers at the airport are out of action, if you have access to a lounge (or as in the case with some airports, can pay to get into said lounge), they may have showers you could use instead.

I always leave my luggage with the hotel during the day after I check out. Before the flight I then change my clothes and freshen up. Hotel lobby toilets are generally cleaner and more peaceful than other public washrooms.

Then leave in good time for the airport. I sweat more when I am stressed so I avoid rushing to the airport. (Hotels are also a good source of well maintained, air-conned taxis).

Make sure you have a change of clothes for each portion of the flight. Change to sleeping clothes when you get on board the long-haul flight, and then change to hot-weather clothes to catch the connection.

If you have a few seconds, stop by high-end perfume shops and try out the samples while connecting or waiting for the connection.

Well, I happen to be one of those people who sweat buckets, emphasis on the s. So much that I asked the doctor about it and there is not much to prevent this but a few things can go a long way. We sweat to cool down and remove toxins, so your goal is to stay cool and consume less sodium (AFAIK salt is the major toxin but I'm not a doctor).

Staying Cool:

• Open the A/C valve to the max, usually on the ceiling of the plane. It is cold and creates circulation which is also good. Better be cold than hot and avoid using the typical polyester blanket supplied on some flights.
• Choose clothes that keep you fresh. Loose fitting natural fibers are often recommended and work best for me. Microfiber is also good and some people recommend bamboo fiber, which I have not tried. Polyester makes me sweat almost instantly but I'm sure you can try to figure out what keeps you freshest.

Staying Fresh:

• Deodorant first, preferably an antiperspirant so it actively reduces perspiration. If you are not using that, you considerably reduce your chances of smelling acceptable.

• Body spray. It's like a perfume, usually very light smelling for the entire body. There may be others but here Axxe comes in bottles small enough to be taken on planes. After it wears off, reapply in the lavatories. I've even gotten some nice comments from strangers about it.

• Baby wipes. Once you are wet somewhere, it gets uncomfortable and smell increases. You can buy them in packs of 10 or 12 at most places selling travel-sized items. Again, use the lavatories to get cleaned up after hours. These are thick compared to toilet paper so dispose of them in the trash bin rather than the toilet. Baby wipes have a light scent and disinfecting properties which help reduce smell.

Other:

• Avoid salty foods and keep the salt diluted by drinking plenty of water. Many women have commented to me that my sweat smells very little and I can only attribute it to drinking tons of water, usually about 12 cups per day. This may send you to the bathroom more often but more toxins will get out the other way.

• Some foods make people smell and may cause gas. If you have not managed to avoid them or still have a problem, chewing gum helps with the former. For the latter, take Ovol which is available in chewable tablets. Adults can take up to 500 mg or so, but try one before being on a plane, just in case it does not agree with you.

Yes, you can get rid of body odor using a waterless washcloth (+ change clothes). Don't try to cover it with perfumes or deodorants.

They are moisturized sponges that require no rinsing or towel (it evaporates quite fast).

It is mainly produced for those who cannot use a shower - like the disabled and elderly - and they leave your skin as clean as after a shower or even better, since some are anti-bacterial as well.

Normally, you can buy them at pharmacies or specialty stores and each won't cost you more than a one-digit dollar figure. That's much cheaper than that 1st class ticket with in-flight shower.

I've often done similar things to the situation you describe in your question, but I've rarely ended up with the same problem you have. I think with a few small tweaks you might be able to get round it too...

Firstly, if you're going to spend the day doing anything in a city before a flight, you'll probably want to shower and change. Doesn't seem to matter to me what the temperature was predicted or actually, a day of doing stuff is enough. A shower freshens you up, helps de-stress etc. I'd say always plan to take one.

How though? Well, if you've been staying in a hostel, just ask at checkout. There's always some showers not in rooms, and I've never had issues with leaving my bags there, coming back later, showering and changing then leaving. You may even get a key for the communal areas too in the day. At hotels, I always speak to them around breakfast time. I explain that I'm going to want to do something in the day, then freshen up before finally departing, and ask if I can perhaps get access to the gym / sports facilities / etc to do that. Some times they'll give me a key when I checkout and leave my bags. Other times, they'll check the systems and give me a late checkout - asking at breakfast time seems to make this a lot more likely than asking at checkout time. Sometimes I can get a late checkout that's late enough for what I really wanted, often it's close enough (eg leaving on the airport bus at 6.30pm, late checkout until 5pm then wifi code + sit in lobby for a bit until the bus).

If that wasn't possible, eg the airport is in a different city to the hotel the night before, then try to shower at the departure airport. This might mean you'll need to pay for lounge access (assuming you weren't organised and didn't pick a flight where you'd get lounge access anyway), or might mean paying for dedicated showers, or might even mean an hour at an airport hotel. Can normally be done. That'll leave you fresh and de-stressed before boarding, which'll help a lot.

On arrival, if you have arrivals lounge access, great, job done! Otherwise check for a paid arrivals lounge, or an airport hotel - some airport hotels do a cheap rate for access to their sports facilities and a breakfast. If not, go straight to your hotel when you get into town. At the very least, you can then leave your bags before you go sightseeing. If it's a hostel, you'd be able to shower there, just ask and explain. At a hotel, say something like "Hi, I know I'm really early and checkin isn't for hours, but any chance I could grab a quick shower and then leave my bags for the day?". If they're not busy, they'll often sort you out with an early checkin then and there, especially if you ask in the local language. If not, you can normally get a pass to the gym, or worst case they might let you borrow a room that someone has just checked out of that hasn't been cleaned yet - it's better than nothing!

Another thing is to have a partial change or two of clothing with you. Even if nothing else is on offer, having a "sparrow bath" in the toilets at the airport then putting on clean socks and a clean tshirt can make a big difference to how you feel and smell. Probably best to take one of those microfibre towels with you if you do that though, as drying yourself off with some kinds of hand driers / paper towels can be "interesting"...

What I usually do after a long flight is head straight for the restroom at the airport.

Brush my teeth, put on some more deodorant, and maybe even change my shirt if I think I really smell.

Then I go collect any checked luggage (if any) and head out into town. This usually makes me feel "fresh" enough until I get a chance to actually clean up at my hotel/destination.

Wear odor-resistant clothing. Merino wool is a personal favorite, but there are many fibers that don't smell after a long sweaty day. I typically wear a merino-wool t-shirt and socks, and synthetic odor-resistant underwear. My shirt won't smell bad after multiple uses, even on the hottest/sweatiest of days. And I don't have to worry about removing my shoes--my socks won't smell bad, either.