Which of the following materials are classified as toxic by inhalation?

The classification of materials as toxic by inhalation is primarily based on their ability to cause harm when inhaled into the respiratory system. Chemical warfare agents are specifically designed to be harmful, including through the inhalation route, making them a significant concern in terms of toxicity. These agents can cause severe health effects, including respiratory distress, neurological dysfunction, and even death, depending on the substance and the dosage.

In contrast, food products are generally safe to consume and do not pose an inhalation risk. Non-toxic gases, by definition, do not cause harm when inhaled, and common household items may vary widely in their toxicity; however, they are not typically classified as toxic by inhalation without specific context regarding their chemical composition and potential hazards. This distinction highlights the importance of recognizing the specific, harmful properties associated with chemical warfare agents. Understanding their classification helps in various fields, especially in emergency response and health safety.