Cool concept! But personally, I didn't have enough dynamics or tension, which is why I quickly got bored with the game.
It seems to me that it was necessary to assign the use of a fire extinguisher to the mouse (for example, to the right button). It's more intuitive this way + the game is perfectly played with one hand (no matter how strange it sounds) and you don't want to switch to the keyboard.
Good luck in game dev!