I seem to sweat through my nose some times.
Carrying a tissue would be impractical for me, as I don't have an infection there's no hygiene reason for not leaving it on the road so perhaps Crankarm needs to get over himself
.
I find carrying snot soaked tissue up my sleeve more disgusting, and what we find disgusting is largely a subjective culturally conditioned thing anyway. Maybe I need to get over myself!
My preferred technique is to block a nostril with the index finger of the opposite arm, allowing a nice controlled shot near the track of the bike, and also evens out the subsequent nose wipe between the mitt-backs.