Snorting DMT DOES work, but as mentioned, you don't want to snort a freebase. However a friend of mine on here had several sessions snorting DMT freebase, it hurt bad but it worked. I still don't recommend it because it is in fact corrosive to your nasal passages.
Oral DMT with an MAOI is different from smoked DMT in effects, it's more like the grandfather of mushroom trips, one of the most intense things there is, very different in character from smoked DMT.