Ingestion: Lethal dose may be as little as one gram. Symptoms of ingestion parallel those of inhalation exposure.

摄食：致命剂量可能小至一克。摄食后的症状与吸入后的症状类似。

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Objective to study the cumulative toxicity and target organs of repetitive inhalation exposure to chlorine dioxide, and determine the safe concentration of chlorine dioxide for human.

目的观察二氧化氯气体多次经呼吸道接触对实验动物的蓄积毒性作用及其靶器官，确定人体可直接暴露于二氧化氯气体的安全浓度。

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Toxic: danger of serious damage to health by prolonged exposure through inhalation.

有毒的：经吸入长期接触有严重损害健康的危险。

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Acute (short-term) inhalation exposure to high levels of 1, 4-dioxane has caused vertigo, drowsiness, headache, anorexia and irritation of the eyes, nose, throat, and lungs in humans.

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In fact, in many cases, the degree of exposure to toxic chemicals in tap water by inhalation is comparable to the exposure that would result from drinking the stuff.

ECONOMIST: Indoor pollution

Symptoms from inhalation may be seen as early as 4-6 hrs after exposure, and can include coughing associated with difficulty breathing.

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