According to Katukina.com, the Brazilian native shamans recommend applying snuff to the L nostril first, representing death, then immediately the R, representing rebirth. Probably don't want to get this reversed. However, they're in the southern hemisphere, and my knowledge of their particular shamanic and other cultural traditions does not extend so far as to extrapolate with confidence on any possible implications w re. to corialis effect (or much of anything else, actually). Sheesh- 18 posts on a bacca forum on an 'aint straight razors cool" posting, and I'm almost dancing w myself on this one (small laughs). Semi-vindicated, though, on sniffing protocol (more small laughs). O.K., very small :- )