Research suggests that while an unmade bed may look scruffy, it is also unappealing to house dust mites thought to cause asthma and other allergies.
研究表明，虽然一张未经整理的床看起来很肮脏，但它无法吸引那些被认为会引发哮喘和过敏症的屋尘螨。
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Particle pollution - such as smoke, dust and heavy metals -- is known to irritate the airways and worsen asthma, and several studies have linked it to heart disease.
A rise in the number of cases of asthma in children on Caribbean islands has been linked to an increase in the dust blown across the Atlantic from Africa.