Thanks!... we really should make some sort of ambition to be the most human you can be!
There are a few passwords currently. Most of them are references to something outside the game, so it's not expected that people will find many of them. Keeping your eye on future dev logs would probably be the best way to discover more.
The changing poison/hallucinogenic traits were due to having a rare "Complex" girl, who is a little different every day. Congrats on getting her!
Thanks again for the comment and feedback, and for enjoying our game...!