Well unfortunately with florals..you'll get quite a variety of interpretations of the scent. I personally like a Plumeria that I think is actually a Dupe of Bath and Body Works. Which is a blend of things, not just the "scent" of the flower. However if you are looking for a "truer" plumeria, you might want to look for a scent listed under Frangapini. Again I think almost all fragrance oils that are florals are blends, not "true" single "note" scents. Check out Oregon Trail Soaps..I'm pretty sure that Susan and Juan have devised some spot on florals though.

it can be done- but it's a leading reason why real gardenia oil is several hundred dollars an ounce (more expensive than attar of roses- I think only freesia and jasmine are more expensive) basically, you lightly butter a piece of glass with crisco, lay the petals out on it, and cover with saran wrap. the next day, you pick the petals off, and collect the crisco. if you were making an essential oil or a pefume, you would then use grain alchohol to 'wash' the essence out of the fat. a much simpler way is to heat coconut oil until it melts (ie leave it out on the counter, or zap it for 10 seconds in the microwave- it liquifies at 75-80 degrees) and pack the bowl with the flowers. put it in a cool place for a day or so, then let it liquify again, and strain the petals out (cheesecloth works) honestly- I use not gardenia, but the tuberose fragrance oil from either The Body Shop, or Camden-grey herbs. gardenia is really unstable.

I doubt that dog urine could have any effect on your gardenia. It is a notoriously fickle shrub that suffers from yellowing leaves for multiple reasons, not all of which are obvious. Planting depth, soil nutrient and/or mineral deficiency, too much (or maybe not enough) water, or you looked at it wrong. In fact, maybe it's just sulking because the dog peed on it!...so I retract my first sentence. As for me, I've killed many more gardenias than have survived in my garden...it is the way of this garden diva. Try the Fragrant Plants forum and post pictures there for specific help.

This is not the correct forum for this question. Try posting in either the Garden Clinic forum or the Container Gardening forum. I will say that gardenias are difficult to grow well indoors or in a container.