I hate it when something smells in your home and you have to go sniffing around to find the source. I'm always a little hesitant about what I'll find, and with a toddler running around in the house, you just never know. Sometimes you may find that your drain can have a smell coming from it. To get rid of smelly drains, and keep them flowing freely, there is some weekly, monthly, and seasonal drain maintenance to do.