I used to snort zolpidem all the time back when I had a script. Fun stuff, but don't do it more than once or twice a week. It will catch up to you. Also, don't ever allow yourself to snort more than 2, or go out in public, drive, etc. I've done some DUMB SHIT after taking ambien, both orally and nasally, things I wish didn't happen. Full on fights with my girlfriend, dropping my pants and running around the house, drinking entire bottles of DXM, sometimes even waking up in the morning with a cut, or a bruise, blood on the sheets, having absolutely no idea how it happened, not remembering a damn thing from any of it....scary shit....
Having said that, I did notice my nose took a hit when I started snorting it more often, but always recovered soon after stopping usage. However, my nose was the least of my problems though, because the depression and anxiety that came from using ambien too often was KILLER. I've only felt a rebound like that from MDMA, not even opiate withdrawal made me feel that depressed and anxious.
I'd love to find more, and moderate myself better this time, because it really was a fun and useful drug for a boring, cold, rainy weeknight. I would wait until around 9 or 10pm, crush up two 10mg tabs, snort one, sit back, let the rush hit, and just hang out watching the little pseudo-trip unfold infront of me, all the while feeling rather euphoric! Usually would go for the last 10mg booster about an hour later, and then eventually make my way to bed and pass out. I never, ever, EVER remembered going to bed though.