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1 .This is Scientific American 60-Second Science. I'm Karen Hopkin. This'll just take a minute.
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2 .They say that the nose knows.
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3 .But it still gets its marching orders from the brain, at least when it comes to the lungs,nose to brain to lungs.
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4 .Got that? Good.
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5 .Because a new study shows that when people with asthma think they're smelling something noxious, their airways become inflamed, even when the odor is harmless.
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6 .The finding is in the Journal of Psychosomatic Research.
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7 .Asthma attacks can be triggered by pollen, dust, harsh chemicals or scents.
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8 .These environmental annoyances constrict the airways in the lung, making breathing difficult.
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9 .In this study, researchers wanted to see whether an individual's assumptions have any influence over this breathtaking series of events.
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10 .So they exposed 17 asthma sufferers to a benign chemical that smells like roses for 15 minutes.
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11 .Nine subjects were told the fragrance was a potential irritant, the other eight that it would be therapeutic.
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12 .The results were as plain as the nose on your face: subjects who expected an irritant experienced inflammation.
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13 .And those who were primed to be soothed had no adverse reactions, even if they were normally bothered by perfumes.
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14 .The results suggest that a rose by any other name would smell as sweet.
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15 .Or be as irritating as you expect it will.
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16 .Thanks for the minute, for Scientific American 60-Second Science. I'm Karen Hopkin.
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