And as for your little ones, who you said would become a prey, and your children, who today have no knowledge of good or evil, they shall go in there. And to them I will give it, and they shall possess it.
Deuteronomy 1:39

The undeserved curse of a parent against a child has no effect except on their relationship. See also Proverbs 26:2. (OTOH, the behavior of a parent can have profound negative impact--curses--on the life of a child.)