Quick Answer:
When fibrous scraps like celery peels are ground, fibers can wrap around the disposal’s cutter or slip under the baffle and trap food. That trapped material sits wet and rots, making an odor worse instead of better. Stop feeding the unit, flush with a strong cold-water flow while running the disposal, and remove and clean the baffle and any visible fibers. If the smell returns, treat it as a maintenance-cleanout issue rather than a one-time rinse.
Why This Happens
Fibrous foods are stringy and long. Instead of being shredded cleanly, those fibers can loop around the shredding ring or wedge under the rubber splash guard (baffle). Trapped particles and moisture create an environment for bacterial growth and a sour or rotten smell. Grease or oily residues can make the smell stick and slow water movement, which makes the problem worse—this is similar to problems reported for Bad smell from kitchen sink drain.
Step-by-Step What to Do
1. Stop feeding the disposal
- Do not add more scraps. Long, fibrous pieces are the main cause of wrapping and trapped food.
2. Run a strong cold-water flow while operating the disposal
- Turn the cold-water tap to a strong stream, then turn on the disposal for 15–30 seconds. Cold water helps push fibers and food down and keeps fats from melting and coating parts.
3. Inspect and clean the baffle (splash guard)
- Turn off power to the disposal at the wall switch and unplug or flip the breaker for extra safety.
- Reach under the sink and pull the baffle out (most are removable). Check for wrapped fibers and slimy buildup.
- Use gloves or long-handled tongs and a small brush or old toothbrush to remove debris. Rinse the baffle under cold running water before replacing it.
4. Clear visible fibers from the grinding area
- With power off, use tongs or a flashlight and grab any obvious strands or particles you can reach. Do not put your hand inside while power could be on.
- If the disposal is jammed, use the manual hex key at the bottom of the unit (if provided) to free the motor per the manufacturer instructions.
5. If fibers keep returning, treat it like a maintenance-cleanout problem
- Repeat the baffle and interior cleaning more thoroughly: remove and scrub the baffle, scrub the rim and the top edge of the grinding chamber with a brush, and run strong cold water while turning the unit on and off several times.
- Consider an enzyme-based cleaner designed for disposals and drains to help break down organic buildup—follow product directions and avoid harsh chemical drain cleaners.
What Not to Do
- Don’t keep feeding fibrous scraps expecting the disposal to handle it—wrapping causes ongoing stink.
- Don’t stick your hands into the disposal without first disconnecting power at the breaker.
- Don’t rely on hot water or pouring grease; hot water can melt fats that later re-solidify and stick. If the disposal jams often or drains slow, professional service may be needed.
When to Call a Professional
- Persistent odor after a thorough clean and multiple flushes.
- Frequent jamming, humming without turning, or slow drainage that doesn’t improve after clearing the splash guard.
- Leaks from the unit, visible damage, or if you’re uncomfortable disconnecting power and working under the sink.
- If you suspect grease or oil has built up and regular cleaning does not remove it—this can behave like a Grease odor from disposal and may require professional removal.
Safety Notes
- Always turn off the disposal switch and unplug it or flip the circuit breaker before reaching into the unit.
- Use tongs, pliers, or a long-handled brush instead of your hands.
- Avoid chemical drain cleaners; they can damage the disposal and plumbing and are dangerous if they splash.
- If using a wrench at the bottom of the unit, follow the manufacturer’s instructions to avoid motor damage.
Common Homeowner Questions
- Will running hot water help remove the smell? No. Hot water can melt fats and oils that later re-solidify and make odors worse; use cold water while running the disposal.
- Can I run vinegar or baking soda through the disposal? Yes—baking soda followed by a small amount of vinegar can help loosen odors, then flush with cold water, but don’t rely on it if fibers are wrapped and trapping food.
- How often should I clean the baffle and chamber? Inspect and clean when you notice odors or after grinding fibrous scraps; for regular maintenance, a monthly quick check is reasonable.