The topic doesn't seem so entertaining to me as some forum members want to present it.
Snake sting or bite is not so innocent, especially not when all parameters for the black scenario are met (snake's age, temperature, amount of injected venom, distance to medical help, psycho-physical condition, tendency to allergies, physical resistance...)
Usually it's not bad, because there are several factors that reduce consequences (booted mountain boots or gaiters where most venom stays at bite, snakes ALWAYS try to avoid humans, snakes in our hills don't have such "strong" venom...)
Can be a big problem on Velebit
(personal experience).
SOS - try to squeeze as much
venom from the wound, above the wound a tourniquet (not too tight)
Lots of safety and pleasures in the hills.