她从不使用氨水或者甲醛之类的有毒洗涤剂，并仔细询问客户和他们的宠物的过敏症病史，以避免使用加剧他们症状的材料。
It USES no toxic cleaning agents like ammonia or formaldehyde, and checks the allergies of clients and their pets to avoid using materials that might aggravate those conditions.
甲醛对人体健康的影响主要表现为：嗅觉异常、刺激、过敏、免疫功能异常。
Effects of formaldehyde on human health mainly asfollows: abnormal sense of smell, irritation, allergy, immune dysfunction.
大剂量的甲醛会引发严重的过敏反应，如果被人体吸收，还可能致人死亡。
Large quantities can cause severe allergic reactions and can be fatal if ingested.
大剂量的甲醛会引发严重的过敏反应，如果被人体吸收，还可能致人死亡。
Large quantities can cause severe allergic reactions and can be fatal if ingested.
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