No one likes smelly drains. They never smell nice, and any smells emanating from them are indications that something has gone wrong. The good news is that most of the possible causes behind the smell are simple to deal with. Some you can handle on your own, but there does come a time when you have to call in the professionals. However, even that is a simple task, and making the drains in your home smell like nothing again won't take that long.