The aroma emitted from green leaves, sometimes referred to among plant scientists as a sweet, "green" fragrance, has been the subject of research for many years. ... Now enzymes have been discovered that convert the grassy smell into a sweeter scent.

What are tomatoes supposed to smell like?

Tomatoes are known for the earthy, spicy odor of the green foliage that is distinct to the species. People seem divided on whether that scent is pleasant or off-putting. As it turns out, the pungent aroma is thought to be part of the plant's defenses against pests and disease.

Why do tomatoes smell weird?

The little "hairs" on tomato stems and leaves are called trichomes. Some of them contain oils that produce a distinct smell when the plants are disturbed.