Custom Story pet peeves

[Romulator]

>walks in room
>room looks well set out
>sees key on desk
>picks up key
>monster spawns and runs to room

I hate cliche encounters and situations which make no sense. How can I throw a chair around a room endlessly, making loud, annoying sounds and nothing occurs? Whereas picking up a key, which makes little to no sound, causes a brute to knock down a door behind me?