Here’s an example of an article addressing the issue of a strong odor in a thermos, with a word count between 40 and 100 words:

How to Eliminate Unpleasant Odor in Your Thermos

1. Clean the thermos thoroughly: Rinse it with hot water and dish soap. Use a bottle brush to scrub the interior. Rinse again and air dry.

2. Try a vinegar solution: Fill the thermos halfway with white vinegar, then top it off with hot water. Let it sit overnight, then rinse thoroughly.

3. Baking soda solution: Fill the thermos with hot water and add 2 tablespoons of baking soda. Let it sit for a few hours, then rinse well.

4. Lemon or citrus fruit: Squeeze the juice of a lemon or any citrus fruit into the thermos. Fill it with hot water and let it sit for a few hours before rinsing.

5. Air it out: After cleaning, leave the thermos open to air dry in direct sunlight. Sunshine helps eliminate lingering odors.

Remember, regular cleaning and proper drying after each use can prevent odors from developing in the first place.