The following is a quote from Kozure:
"The setting for snake bites is in the settings.hpp file in the config\subconfig folder of the vn_mf_latest.cam_lao_nam.pbo file.
snakebitechance[] = {0.5,1}; // 50% chance to get bit if closer than 1m, 0.1 = 10%
snakebitefrequency[] = {300,300}; // Restrict snakes to biting once every 600s, with another 300s of reduced chance.
Before modification, if a snake comes within 1m of you, there is a 50% chance of it biting you. A snake can bite once every 600s, with 300s of reduced chance.
I modified it to this on my server:
snakebitechance[] = {0.05,1}; // 5% chance to get bit if closer than 1m, 0.1 = 10% (default 0.5)
snakebitefrequency[] = {600,300}; // Restrict snakes to biting once every 900s, with another 300s of reduced chance. (default 300,300)"
Does that answer your question?