If you snort a chemical compound it will be your blood stream pretty much instantly.
The membranes in your nasal passage are very thin and contain a large amount of blood vessels.
Not something to do unless you want to damage your nose.
Dabbing or ingesting orally takes longer to pass into your blood stream but is "safer" as the compound has to pass through your digestive tract and will be processed by your liver.
Ignorance: Reassuringly Expensive.