For instance if I smell the fragrance of a rose, well it smells like roses (little bit sweet). But is that smell the same for other people?
Because we also have different voices, why not have different olfaction.
Humans generally have the same set up of olfactory receptors, since they are encoded by genes (there likely are minor differences between people, since there are a lot of these genes). Therefore chemically or physically all humans can smell the same substances.
However, how a smell is perceived depends also a lot on how the brain reacts to a certain smell (or rather the activation of certain olfactory neurons). Therefore individual people can perceive the same chemical substance a different way - how different depends probably strongly on previous experiences.
Humans actually have a wide diversity in the range of odors they can detect. , The variations are dependent on a number of factors, including age, sex, pregnancy, training, and individual genetics. ,,,
A significant source of genetic variation in olfactory function between individuals comes from the fact that quite a few chemical-sensing genes have in recent evolutionary times become defective in some gene variants while remaining functional in others. An individual's inheritance of a particular combination of functional and nonfunctional olfactory receptor genes gives the individual an personalized combination of smelling sensitivities. 
 Menashe, I., Man, O., Lancet, D. and Gilad, Y., 2003. Different noses for different people. Nature genetics, 34(2), p.143. PDF
 David G. Laing, Richard L. Doty, Winrich Breipohl, eds., The Human Sense of Smell, Springer Science & Business Media, 2012, p. 312. Image
 Odor - Wikipedia
 A.B. Marin T.E. Acree J. Barnard, Variation in odor detection thresholds determined by charm analysis, Chem Senses (1988) 13 (3): 435-444. DOI: https://doi.org/10.1093/chemse/13.3.435
 Darren W. Logan, Do you smell what I smell? Genetic variation in olfactory perception., Biochem Soc Trans. 2014 Aug; 42(4): 861–865. doi: https://doi.org/10.1042/BST20140052