How to Remove Smell from a Travel Mug

Why Travel Mugs Develop Odors

Travel mugs trap coffee, tea, and milk residue in the body, lid, and gasket. When not dried properly, this residue breeds bacteria and mold — the source of that stale, sour, or musty smell. The good news is that most travel mug odors can be fully eliminated.

What You'll Need

• Baking soda
• White vinegar
• Bottle Bright cleaning tablets
• Dawn Platinum Dish Soap
• Cup lid gap cleaning brush set
• Bottle brush with long handle

Method 1: Baking Soda Soak (Best for General Odors)

1. Add 2 tablespoons of baking soda to the travel mug
2. Fill with warm water and stir to dissolve
3. Let soak for 30 minutes to several hours for strong odors
4. Scrub with a bottle brush and rinse thoroughly
5. Repeat if needed for persistent smells

Method 2: White Vinegar Soak (Best for Sour or Musty Smells)

1. Fill the mug with equal parts white vinegar and warm water
2. Let soak for 30 minutes
3. Scrub with a bottle brush, rinse thoroughly, then wash with dish soap to remove vinegar smell
4. For the lid, soak disassembled parts in a bowl of vinegar solution simultaneously

Method 3: Bottle Bright Tablets (Easiest Method)

1. Fill the mug with warm water and drop in one Bottle Bright tablet
2. Let fizz and soak for 15–30 minutes
3. Rinse thoroughly — no scrubbing needed for most odors
4. Soak lid parts in a separate bowl with another tablet

Don't Forget the Lid

The lid is often the main source of odor. Disassemble it completely and use a lid gap cleaning brush to scrub all crevices and the gasket. Soak the gasket in white vinegar if it smells strongly.

Preventing Travel Mug Odors

• Rinse immediately after every use — don't leave coffee or tea sitting inside
• Always store with the lid off to allow airflow and prevent moisture buildup
• Do a baking soda or Bottle Bright soak weekly
• Replace the gasket if it retains odor even after cleaning

Final Thoughts

Baking soda and Bottle Bright tablets are the most effective odor eliminators for travel mugs. The key is also cleaning the lid thoroughly — especially the gasket — and always storing with the lid off so moisture can escape.