Smell is often an overlooked element of the home, even though it strongly affects how clean, comfortable, and welcoming a space feels. Unfortunately, unpleasant odors can quickly ruin that atmosphere.
Plumbing traps, household appliances, mattresses, textiles, installations, and hard-to-reach areas often have a much bigger impact on indoor freshness than visible furniture or décor. From a foul-smelling dishwasher to mysterious drain odors or pet-related smells, everyday habits can quietly fill a home with unpleasant scents.
Lifestyle experts at Real Simple have identified the most common odor sources you should check first.
Trash Can
Food scraps and crumbs can build up over time, even if you empty the bin regularly. Wash it thoroughly, disinfect it with diluted bleach, and let it air-dry to keep odors away.
Refrigerator
Spilled liquids, expired food, and loosely sealed containers are frequent culprits. Regularly clean shelves and drawers, check expiration dates, and store leftovers in airtight containers.
Pet Areas and Litter Boxes
Pet bedding, litter boxes, and feeding areas should be cleaned weekly with mild soap and water. Vacuum pet hair under furniture and use air fresheners if needed.
Damp Laundry
Leaving wet or dirty clothes in humid areas like the bathroom encourages bacteria growth. Wash damp laundry promptly and store dirty clothes in dry, ventilated spaces.
Shoe Closet
Shoes trap sweat and moisture, creating ideal conditions for odor-causing bacteria. Let shoes dry fully before storing them and ensure proper ventilation. Shoe deodorizers can help.
Bed Sheets and Mattress
Sweat, dead skin cells, and spills can cause odors. Wash sheets weekly, vacuum the mattress every six months, and use baking soda to neutralize smells.
Washing Machine
Moisture trapped inside the drum and detergent drawer can lead to mold. Leave the door and drawer open after each cycle and clean regularly with vinegar and baking soda.
Dishwasher
Food debris in the filter and standing moisture can cause strong odors. Clean the filter regularly and run empty hot-water cycles to sanitize the interior.
Shower Drain
Hair, soap residue, and grime build up in drains and create unpleasant smells. Clean drains regularly using commercial cleaners or a mix of baking soda and vinegar.
Toilet (WC)
Regular cleaning is essential, not just inside the bowl but also around the base and exterior surfaces. Invisible residue can still cause odors.
Coffee Machine
Old coffee grounds and residue can produce strong smells. Clean all removable parts frequently to keep both the appliance and your coffee fresh.
Leaking Pipes
Water leaks can cause musty odors from mold growth, while gas leaks smell like sulfur and are dangerous. Call a professional immediately if you suspect either.
Sink Drain Trap (U-bend)
If a sink isn’t used often, the water barrier can evaporate, allowing sewer odors to escape. Run water regularly or add a small amount of mineral oil if you’ll be away.
Electrical Installations
A fishy or burning smell near outlets or appliances may indicate an electrical issue. Stop using the device and call an electrician immediately.
Pay special attention to areas that hold moisture, such as kitchens, bathrooms, and basements. Regular cleaning and ventilation can make a dramatic difference in keeping your home smelling fresh and inviting.
