Abuse of which type of drugs may result in symptoms similar to alcohol intoxication without the odor of alcohol?

The abuse of depressants can indeed lead to symptoms that closely resemble those of alcohol intoxication, such as drowsiness, confusion, and impaired motor skills, without exhibiting the characteristic odor of alcohol. Depressants, like alcohol, work by slowing down the central nervous system, which can produce similar sedative effects.

In contrast, the other types of drugs mentioned do not produce the same kind of intoxication effects. Stimulants, for instance, increase alertness and energy rather than causing sedation. Hallucinogens primarily affect perception and can lead to altered states of consciousness, but they do not mimic the intoxication effects of alcohol. Narcotics, while they can induce sedation and pain relief, generally have a more distinct profile and can be recognizable through their own set of side effects and potential withdrawal symptoms. Therefore, the unique properties of depressants make them the correct choice in this context.