Wellbutrin is not a recreational drug.
You will gain nothing from insufflating it. In fact rather than any form of Harm Reduction, advising you to snort Wellbutrin would be Harm Expansion.
If you are trying to take Wellbutrin recreationally I would recommend that you stop now and take it as your doctor prescribes - orally.
Some drugs are perfect for intranasal administration, wellbutrin is not one of them.
i think the best advice for you would be to take your wellbutrin as prescribed. If you wish to snort something - look elsewhere.
I'm closing this because the only thing we can tell you is not to do this - there isn't going to be any further useful discussion.
PM me if you would like to discuss this.