Your lunch box smells because it's plastic

Your lunch box smells because it’s plastic — switch to glass or stainless steel and the smell problem mostly disappears.

Plastic and some silicone absorb the oils from fish and eggs and then slowly release them forever. Glass and stainless steel don’t. That’s the real fix. A cheap glass meal prep container with a locking lid costs a few bucks and ends this whole saga.

If you’re stuck with plastic for now, the trick is a baking soda paste. Rub it inside, let it sit for 10–15 minutes, rinse, then wipe with white vinegar. Sunlight helps too — UV kills the odor after washing. But that’s maintenance, not a cure.

Also, don’t put fish directly in the lunch box. Pack it in a separate small airtight glass or stainless steel container inside the bag. Then the lunch box just carries the container, and it never touches the fish in the first place.

Future You will stop apologizing to your coworkers.