The air passages constrict when allergens (flower pollen, for instance) or other irritants are inhaled.
Despite big promises, few air purifiers can rid your home of irritants like pollen, dust, and smoke.
While there were "irritants on both sides", such problems could not be used "as an excuse to do nothing", he said.
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What we call "air fresheners" may freshen the smell, but they just mask the pollution--and may even act as irritants themselves.
It may be that sprays contain irritants specific to asthma, they suggest.
It is true that previous such attempts have come up short in the face of differences over market-access barriers and other long-standing irritants.
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And while scientists still don't know what causes the disease, they believe common irritants found in homes across the country can trigger an attack.
And in pursuit of a venue that permits the benefits of social media with fewer of the irritants, many of us may soon switch to the next best thing.
And I am very happy to report to you that there are, today, no irritants whatsoever in our working together on a multiplicity of areas, both bilateral, regional, and global issues.
Just this week, U.S. criticisms of proposed European data-privacy rules and plans to tax trades in financial instruments indicate the potential for future regulations to act as irritants in the relationship.
Despite years of decline, steel remains one of the most protected and subsidised industries in America, and one of the main irritants in global trade negotiations, weakening American arguments for open markets elsewhere.
The 32-story hotel has nearly 1, 200 all new and cutting edge guest rooms, all part of the new Respire by Hyatt hypo-allergenic program, featuring a six-stage process to remove irritants, including state-of-the-art air filtration.
Other irritants in the Estrada-Ramos relationship abound - most of them having to do with the perception that Estrada is either undoing Ramos's legislative program or not taking his predecessor's initiatives to their logical conclusion.
People who have COPD can be more susceptible to such respiratory tract infections, and may experience exacerbations episodes of potentially life-threatening shortness of breath when they catch a cold or breath in air pollution or other irritants.
The minor format irritants are still there.
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It said that exposure to the smoke from the pyres can exacerbate the symptoms of asthma, and that people less than half a kilometre from even small pyres may be exposed to high concentrations of irritants such as sulphur dioxide.
The most likely explanation could involve the "hygiene hypothesis, " which suggests that improved sanitation methods and efforts to keep germs at bay may deprive young, still-developing immune systems from being trained to recognize and react appropriately to the right types of irritants.
Although doctors have long known that a saline solution can help unclog sinuses, the practice has gotten a newfound popularity with the "neti pot, " a teapot-shaped container that flushes a saline solution through the nose --in one nostril and out the other, taking with it mucus and rinsing away irritants.
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