http://www.snake-removal.com/venomous.html
Snakes rarely attack unless disturbed or threatened with the exception of the black racer which can be large and will chase you. (Non venomous)
Cider vinegar wipe down will not only relieve bug bites but in most cases will prevent them. Safer than off except for the no see ums I find on the streams, then it's a face net from the top of the hat to my collar.
Also if you ingest a lot of sugar you're kinda the target.
Poison ivy is easily remedied with a soap made with the sap of the "Jewelweed" plant.
https://en.m.wikipedia.org/wiki/Impatiens_capensis
The soap is available at most outdoor and feed stores.
The sap can also be applied directly if you think you've been exposed, find the Jewelweed and squish the sap out from the bottom of the stalk first.
It works for other poisonous weeds but oddly enough flourishes near poison ivy.
I am regularly in the woods, highly susceptible to poison ivy, oak and sumac. Former scout who payed attention during nature lectures.