Question

The characteristic smell of onion bulbs is due to

Answer 1

Hey Mate,
The characteristic smell of onion is due to the emission of Sulphur and it's derivatives from it....
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Answer 2

The onion (Allium cepa L., from Latin cepa "onion"), also known as the bulb onion or common onion, is a vegetable that is the most widely cultivated species of the genus Allium. Its close relatives include the garlic, scallion, shallot, leek, chive, and Chinese onion.