What sort? I mean, I've done a fair amount of cooking in my life and have clouds of icing sugar (and flour) up my nose by accident. The sugar is horrible. It leaves a weird thing on the back of your throat. And if it's caster or granulated, then you have texture to deal with too.
I think it is normal to experiment with legal highs that are accessible in your own home, but lay off the sugar. And PLEASE stay away from the salt. Don't snort weird stuff, it's really hard on your nasal cavity. Google deviated septum. Get on Erowid.org. Try nutmeg or morning glory seeds. Happy trails!
*shiver*
It's normal to be curious but to actually try it isn't.