Does fresh air help motion sickness?
Verdict: Untested
Almost certainly it helps somewhat, and almost nobody has studied it directly. The plausible mechanisms are cooling, removing the smells that trigger nausea, and the fact that getting to fresh air usually means getting a view out at the same time.
What it's claimed to do
Wind the window down, get up on deck, point the air vent at your face. Universal advice, given by everyone, tested by essentially no one.
- YesTested for motion sickness and it held up.
- ProbablyReal trial support, but modest or from a single study.
- MixedTrials disagree — some found an effect, better-designed ones did not.
- Untestedthis remedyNo one has tested this for motion sickness. It may still be sensible.
- NoTested for motion sickness and it did not beat a placebo.
Levels describe the state of the published research on motion sickness specifically — not on nausea in general, and not how well something worked for any individual. “Untested” means no trial has looked; it is not the same as a remedy having been tested and failed.
What the research actually says
This is one of the most widely repeated pieces of travel advice in existence and one of the least examined. We could not find a controlled trial isolating fresh or cool air as an intervention for motion sickness, and rather than borrow a study about something else and imply it applies, we will say so. What can be said is that three separate things happen at once when someone goes out for air, and at least two of them have support elsewhere. Cool air on the face is a standard non-drug measure for nausea across clinical settings. Strong smells — diesel, galley food, other people's sickness — are well-recognized triggers, so removing yourself from them removes a trigger. And on a ship or a coach, the place with fresh air is almost always the place with a horizon, which is the one intervention on this page with strong field evidence behind it. That last point is the useful one: part of why going on deck works so well may not be the air at all.
No studies to list. We could not find a controlled trial testing this for motion sickness. That is the finding, and we would rather show you an empty table than fill it with research about a different condition.
Safety & what to watch for
- Nobody has isolated it, so the confidence here comes from mechanism and near-universal clinical practice rather than from a result.
- Some of the benefit is probably the view, not the air. If you cannot get both, prioritize the view.
- On deck in rough weather, safety comes first — hold on, stay inside the rails, and follow crew instructions. Being unwell makes people less steady than they think.
- Cold air is not automatically better than cool air. Getting genuinely chilled is its own misery and does not appear to help more.
If you want to try it
- In a car, open the window on your side rather than only using the vents — moving air on your face is the part people report helping.
- Point the vent at your face rather than at your body, and turn recirculation off so you are drawing in outside air.
- On a ship, going to an open deck midships gets you cool air, a horizon and the part of the vessel that moves least, all at once.
- Get out of the galley, the toilets and anywhere with strong smells at the first sign of queasiness rather than waiting.
Something with better evidence: Does looking at the horizon help motion sickness — verdict yes, and it costs nothing to try.
Looking for something drug-free?
Try Dizzout Free
We make a free, drug-free app that plays calibrated sound through headphones you already own. We hold it to the same standard as everything on this page: it is not a medication, it will not suit everyone, and if a forward view and slow breathing are enough for you, use those first.
Frequently asked questions
Why does fresh air make nausea feel better so quickly?+
The likely contributors are cooling of the face, escaping odor triggers, and usually gaining a view of the outside world at the same time. Which of these does the work has not been separated experimentally.
Does air conditioning work as well as an open window?+
It is probably a reasonable substitute for the cooling part, especially if you direct it at your face and switch off recirculation so you are not re-breathing cabin smells. It does not give you a view.
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When it isn't motion sickness. Severe or lasting dizziness, a spinning sensation at rest, hearing loss, ringing in one ear, double vision, a bad headache, chest pain, fainting, or vomiting you cannot stop are not motion sickness. Seek medical care rather than a travel remedy.
Dizzout is not a medical provider and nothing here is medical advice. These pages summarize published research so you can weigh it — they cannot account for your health, your medicines or your pregnancy. Talk to a doctor or pharmacist before starting any supplement or medication, especially if you take other drugs, are pregnant or breastfeeding, or are buying for a child. Evidence summaries reflect the published literature as of July 2026 and describe findings in groups of people, which cannot predict your individual response. Product and brand names are trademarks of their respective owners; Dizzout is not affiliated with or endorsed by them.