snorting pills causes permanent damage to your lungs. some of the drug, and much worse, some of the binders/fillers like talcum powder end up in your lungs. some people's addictions tell them it's worth it for extremely pleasurable highs that cannot be achieved from oral administration, like opana and dilaudid. to damage an organ as important as your lungs for something as silly as caffeine -- which can be taken orally and is not very euphoric either way -- is very misinformed and sad.
there is zero reason to snort those pills, and a very strong reason to not.