Sunlight-cured tobacco, Bastam, Iran Curing and subsequent getting old make it possible for to the gradual oxidation and degradation of carotenoids in tobacco leaf. This generates specific compounds during the tobacco leaves and gives a sweet hay, tea, rose oil, or fruity aromatic taste that contributes on the "smoothness" https://jaredlfvnd.sunderwiki.com/1310482/helping_the_others_realize_the_advantages_of_smoke