“invisible shield/ barrier ", block airborne allergens, pollutants

Really?

The Claim: Some Plants Can Filter Airborne Chemicals

By ANAHAD O'CONNOR

NASA has found that at least 15 common indoor plants can filter pollutants from the air, to some degree.

Allergy-Free Dining
More restaurants are catering to patrons with food sensitivities, posing significant challenges to kitchen staff. Even tiny particles of an allergen can cause health risks.

Airborne 由空運輸的；起飛後停在空中

The basic design has been altered. It now bears little resemblance to the sketches released when Boeing launched the concept a year ago, in order to disguise its retreat from the “super-jumbo” market. Those sketches owed more to public relations than to aerodynamics. The new shape should actually stay airborne.

Campaign Spotlight

Brand Is Familiar, but the Product Is New

By STUART ELLIOTT

Back in the “Mad Men” era, Colgate toothpaste -- then still known as Colgate Dental Cream -- promised that its “secret ingredient,” Gardol, would form an “invisible shield” that protected the mouth from tooth decay and bad breath. Decades later, the unseen barrier is back, this time guarding body parts that are due north.
In a multimedia campaign now under way, the Medtech Products division of Prestige Brands Holdings is introducing two versions of an over-the-counter product named Allergen Block, a treatment that is meant to alleviate nasal-allergy symptoms by keeping allergens from entering the nose. The drug-free topical gel, which comes in a tube, is applied around the nostrils and between the nose and upper lip -- where, the company promises, it forms an “invisible shield” (or an “invisible barrier,” in some ads) that helps block airborne allergens.
Go to Complete Article

allergen[al・ler・gen]

• 発音記号[ǽlərdʒən]

[名]《免疫学》アレルゲン, アレルギー抗原. ⇒ALLERGY

àl・ler・gén・ic

[形]アレルギーを起こす.