Dracaena fragrans. It only seldom blooms, but the flower inflorescence lasts about a week and smells very strongly of hyacinths.

Pepperomia obtusifolia is attractive and very easy to grow. The fresh plant has no smell. It's only when a lower dries up and falls off that you will smell a very strong maple syrup smell from far away, and it took me a while to figure out where this smell was coming from because I had this plant together with many other houseplants the fresh leaves do not smell like that even if crushed.

Some Epiphyllum and Selenicereus cacti can be grown indoors pretty easily, and the flowers are very fragrant.

• hyacinths and spring bulbs can easily be grown indoors if you force them, and they can be extremely fragrant, but make sure the varieties are fragrant.

• Winter jasmine is also pretty easy, but it needs to be in a bright spot near a window.
• You can grow patchouli as a houseplant, but it's a smell people either love or hate, and fresh patchouli smells rather different and much lighter and fresher than the base notes of aged patchouli.

• You can grow cinnamon trees indoors, but they aren't super easy, and they don't really smell unless if you rub the leaves or bark or unless if they are in bloom.
• Zygopetalum orchids are fragrant like hyacinths, and Cattleya orchids are often extremely fragrant and you can smell the floral suntan lotion-like smell from quite a distance. You rarely see Cattleya orchids anymore now that the easy to grow but scentless Cymbidium and especially Phalaenopsis and orchids come in so many shapes, sizes, and colors.

• Gardenias can be grown indoors, bit it's not easy, and I don't bother because they grow outdoors in the ground without and care where I live. Likewise, you can grow osmanthus indoors if you really want to and you have a good spot.
• It's possible to grow a dwarf lotus flower indoors by a sunny window, but only some varieties are fragrant.

• Mitriostigma axillare is another choice, but some people say the flowers smell bad.
• You can grow herbs indoors by a sunny window, but indoors they only smell when you rub them.
• Rondeletia leucophylla and some other species (“Panama Rose”) are very pretty plants, but I have never smelled them. Some people say they don't smell, or they smell strange.

• There is also the easy to grow Gynura aurantiaca (“purple passion” or “velvet plant”), it has purple velvety leaves, and the orange flowers are very fragrant, but most people find the scent of the flowers to be questionable.

There are other plants, but these are just the ones I thought of right now, and that's plenty to think about growing.