Some sake has a very prominent fragrance, especially a lot of premium daiginjo sake.
Embedded in this aromatic package can be fruit fragrances of all kinds, flowers, rice-like elements, and anything in between. Sometimes it's gentle and is only there for a few seconds, other times it can be strong and have staying power of a few days. Others have almost no perceptible smell whatsoever. Quiet, gentle and straightforward, sake like this survives on its flavor and presence alone. Neither end of this spectrum is inherently better than the other.