And that is a big difference, alcohol flushes out of your system, but there is no similar experience with pot.
You didn’t answer the question.
Water flushes pot out fast enough to pass a pee test within a week, if you work at it. Most companies random pee test as it’s cheap. They catch most users eventually due to the random, but not necessarily right away. Cheaters always thing they can pull it off, and if they don’t smoke too often and follow the water regimen they can go a while.
Daily smokers are caught quickly.