If you notice an unpleasant odor from your drains or permeating your home, it may not seem like a plumbing emergency. However, clogs made of food, hair, grease and soap scum contain bacteria that can be harmful to people and pets. Additionally, sewer smells can cause illnesses and make life unpleasant. If you have odors emanating from your plumbing system, arrange for service to correct the issue.