Yes, hard-boiled eggs sometimes have an odor. According to one source, this is especially true while they are being cooked and the smell tends to linger and is often unpleasant.
The Source of the Smell
The smell associated with hard-boiled eggs is often described as sulfurous. This odor comes from the hydrogen sulfide produced during cooking.
How to Reduce the Smell
One practical solution to eliminate the sulfurous smell of hard-boiled eggs is to use vinegar.
- Adding vinegar during the cooking process can help to neutralize the odor. The reference suggests vinegar helps get rid of the boiled egg smell.