Although measured air pollution ranged below current WHO guidelines, a considerable proportion of the adults surveyed rated themselves as annoyed by car fumes (39.7%) or visible dustsoot exposume (26.9%). Of the mothers (children's study), 12.2% repo

Although measured air pollution ranged below current WHO guidelines, a considerable proportion of the adults surveyed rated themselves as annoyed by car fumes (39.7%) or visible dustsoot exposume (26.9%). Of the mothers (children's study), 12.2% reported car fumes perceptible most of the time in the exposed area, 5.3% in the unexposed area.
In the adult study, a series of factors were significantly associated with the perception of car fumes or dust/soot.

尽管测量到的空气污染程度低于目前世界卫生组织所规定的标准，但在调查中有相当比例的成年人称自己因汽车废气(39.7%)或者接触尘土和煤碳(26.9%)而感到苦恼。对儿童的谓查结果表明:在被污染地区，有12%的孩子母亲反映多数时候受到汽车废气的影响，而在非空气污染区域只有5.3%的母亲有这种反映。
在对成人的研究中，有一系列的因素与对汽车废气或灰尘/煤烟的嗅觉具有明显关联。