I get a lot of bright, sweet passionfruit that isn’t very tart- reminds me of the kids watermelon shampoo I used to use. Maybe it wasn't watermelon (but it was the first thing I thought of), but it's very reminiscent to a playful, fun scent from my childhood. To be honest, I don’t really know what papaya smells like, but I definitely notice the candyfloss adding a very sweet, airy sugar note. Surprisingly not cloying and it wore well in the summer heat. It’s nice, but not really my vibe- objectively a very good scent though.
EDIT: Oh, it definitely reminds me of Welch's passionfruit juice. My mom used to (and still does) drink it religiously. I think that's where I get the nostalgic feeling from!