to smell pleasantly; to be fragrant — used for scents like flowers, tea, or perfume (intransitive).
庭のバラが甘く香る。
The roses in the garden smell sweet.
部屋に焚いたお香の香りがふんわり香る。
The scent of the incense burned in the room gently lingers.
新鮮な茶葉が淹れたてで香る。
Fresh tea leaves smell fragrant when freshly brewed.