What symptom can indicate inhalant intoxication?

Inhalant intoxication is characterized by a range of psychological and physiological symptoms due to the effects of chemical substances that are inhaled. Euphoria is a common symptom experienced by individuals under the influence of inhalants. This feeling is often a result of the drugs' action on the brain, leading to altered mood and perception. Many inhalants can produce a fleeting sense of pleasure or a high, which explains why euphoria is a key indicator of inhalant use.

When considering the other symptoms, options such as improved motor skills, severe weight gain, and rapid breathing do not typically correlate with inhalant intoxication. In fact, inhalants often impair motor coordination and can lead to adverse physical responses rather than improvement. Rapid breathing may occur in some scenarios but is more often associated with other conditions or stimulants rather than the euphoric and sedative effects associated with inhalants. Therefore, euphoria stands out as a definitive symptom of inhalant intoxication.