Bellatrix:
To answer your first question, I would say yes to repotting it, but not until it is finished blooming. I would remove the plastic pot, melt or cut some additional holes in the bottom and sides of the plastic and find a regular red clay pot with good drainage that the plastic will fit inside of and move it to it's temporary home. Once it has completed the bloom cycle, I would repot it, being sure to remove all the old potting mix and rotted roots to ensure a fresh start. If your plant is potted in straight sphagnum moss at this time, do be careful to not over-water it; the one I purchased around Mother's Day is in straight moss and I only have to water it once every 10 days or so - I wait until it is completely dry before giving it any water, as the moss will hold water better than you think. It is better to underwater than over-water an orchid, as standing in moist medium will pretty well guarantee rotted roots.
Scents are such an added bonus to orchids, but you will find that the commercially offered phaleanopsis, paph's and miltonias are usually NOT scented. BUT, many species orchids are scented, some quite heavily. Brassavola nodosa ("lady of the night orchid") has such an overpowering perfume, it is hard to miss when even one flower is in bloom. And they smell their best early in the night, thus the name. Also, Maxillaria tenuifolia ("coconut orchid") smells like coconut creme pie. Many of the Cattleya orchid tribe have wonderful smells also. And you will learn that just because an orchid is listed as "fragrant", does not mean that it is a NICE fragrance - some Bulbophyllum smell rather rancid! Orchids also have times that they smell and times they don't; some in the early morning, some in the evening, some in hot sun, some at night.
But, the desire for fragrance is a personal taste issue - I look for fragrance in my orchids as there are so many different varieties and color combos, I can find several that not only look good, but smell wonderful.
Here is a couple of pics of the phalae that I purchased from Walmart - $9.98 for the plant! Now that I brought it into the light I see that three blooms are starting to look "tissue papery" and thus are about to drop. Just thought I would show off this NoID!
Hope you like it - but again, to each their own!
Steve