We learn how to move around our snakes in order to avoid upsetting them, and they get used to the way we move. Different people don't have those skills, and move differently, which can upset snakes.

When I water my hatchling ball pythons, there's nothing. When my husband does so, they strike at him, lol.

It's not because they know who I am, or who he is. They've seen no more of me than they have of him. It's simply the difference in the way we move around them. (He still has a bit to learn, lol).