Tropical Moonflower Vine, start from seeds, (one will do it!) Will take over, but just for the summer. You can literally watch it unfold around 4 or 5 pm. Plant where you can see & smell it in the evening.
Stephanotis floribunda. Grow in a well-lit situation, but shade from direct sunlight in summer. Requires high humidity levels. Feed fortnightly in April-October with a proprietary, high-potassium, liquid houseplant food