YUM. They're my absolute favorite.
I've never smelled the blossom; I understand they're not pleasant to smell. The fruit smells wonderful, though, and tastes like banana pudding--very tropical. My husband thinks they taste like a cross between bananas and mangoes; my mother thinks they taste like a cross between bananas and pineapple or strawberry. Just like with persimmons, they're better when almost overripe.
Once you've had one, you begin to wonder why more people don't try to grow them! The shelf life is not good, only a few days, which is why you probably can't get them in stores. A friend of ours hates pawpaws. She the only one I know who's tried one and didn't love it. She's also the only one I know who has her own pawpaw patch, so it works out for us. We think she's crazy. But she lets us come and gather up the fruit that she would otherwise toss, and I can preserves and chutney, and make pawpaw bread and ice cream.
We've saved a bunch of wild pawpaw seeds and have planted them everywhere on our acreage, hoping they'll come up. I've also started some seedlings that I've planted. We've had commercial varieties, too, that really do taste better. The fruits are MUCH larger with fewer seeds, and the flavor is more subtle. However, I'd be tickled pink if the wild ones sprouted, to be honest. We don't have the money at this point to purchase commercial sedlings, but any variety by
Neal Peterson would be The Bomb. We sampled some of his fruit at a pawpaw festival and were amazed.