I have tried to teach DS to be aware that areas with long grass, piles of logs etc. are places where snakes like to hide. He knows that snakes can bite and we never try to touch or hurt one (the majority of people who get bitten were trying to kill it). If he ever gets bitten he needs to tell me straight away for first aid. If he sees one and it is too close to walk away from just stay really still (and yell for me) and hopefully it will just move away. And for you, make sure you know first aid for snake bites and keep the appropriate bandages and contact numbers on hand.
I can't really remember thinking about it too much when I was a kid even though we lived on acreage.