The only thing I remember being even close to as bad as snorting freebase DMT was trying to snort DXM Hbr powder.
But yeah it works and it works very well. 100mg DMT up the nose will have you in DMT land for an hour and a half.
No way on earth it's worth the pain and the fact that the pain doesn't even begin to subside for the duration of the trip, and then your nose is probably fucked up for the next week.