Sunlight-cured tobacco, Bastam, Iran Curing and subsequent growing old enable with the gradual oxidation and degradation of carotenoids in tobacco leaf. This generates certain compounds within the tobacco leaves and gives a sweet hay, tea, rose oil, or fruity aromatic flavor that contributes to your "smoothness" from the smoke. https://broadfar.com/the-benefits-of-switching-to-nusos-heated-tobacco-solutions/