Some more info...

If you ask someone "do you know what it feels like to be
inebriated?" they'd probably say yes, consciously, but that
inebriated state wouldn't (in any significant way) be available to
them.

However the brain & the body learned what to do under the influence,
in a certain sequence. If you remind the brain what to do in what
order, it follows its own steps into the state. And sure enough,
viola, people re-experience the state. Nice thing is -- unlike with
the substance in your body -- you can then snap out of it pretty
quickly -- or you can turn it up and then turn it down -- or you can
morph it into something different, etc.

Now these states are experienced as real, usually including
diminished or delayed responses (if they chose alcohol). So I
wouldn't want someone who experienced the drug-of-choice induction
using their memory of alcohol to get anywhere near a car in that
state. However, unlike a drunk who could take hours to get sober,
the drug of choice subject has none of the actual drug in their
system, still affecting the neurology & ever-so-slowly metabolizing.
As such, drug-of-choice subjects can shake off the effect in very
little time.