What is that smell?  There\'s a good chance it\'s coming from your drains.  Fats, oils, grease, food, waste and debri can all collect in your drain and emit pretty offensive odors.  Not only is this unpleasant for your employees, it can keep customers away.  While a bad odor may be low on your \"to-fix\" list, it should not be ignored.  Bad odors from your drains is a good sign that solids and grease are collecting in your pipes which will eventually lead to unwanted clogs, backups, and cleaning and repair costs.  Don\'t ignore the warning!