The first thing to do is drying the grounds out on a cookie sheet, place them inside a bowl and then put it in the freezer or refrigerator to neutralize smells. You can also drop it in your trash disposal in order to keep it smelling better and fresher.
If you have a garden, then you have to take advantage of the coffee grounds because they are highly acidic. Simply, spread them on the flower beds generously in order to watch them bloom beautifully.
Also, the coffee ground is loaded with potassium, magnesium, phosphorous, and copper. So when they degrade, they release nitrogen that helps to make a rich compost.