So I have a small cabinet that I keep in my closet. The exhaust fan points towards the open window which I keep open most of the time. However, it's spring and I'm noticing that the grass in front of the open window is much greener than the rest of the yard. Could there be nutrients in the humidity leaving my window feeding the grass? What do you guys think? The first pic is in front of my window, the other is just a random spot in the yard.