GENESIS 9:20-25
20 And Noah began to be an husbandman, and he planted a vineyard:
21 And he drank of the wine, and was drunken; and he was uncovered within his tent.
22 And Ham, the father of Canaan, saw the nakedness of his father, and told his two brethren without.
23 And Shem and Japheth took a garment, and laid it upon both their shoulders, and went backward, and covered the nakedness of their father; and their faces were backward, and they saw not their father's nakedness.
24 And Noah awoke from his wine, and knew what his younger son had done unto him.
25 And he said, Cursed be Canaan; a servant of servants shall he be unto his brethren.
Eze 18:20 The soul that sinneth, it shall die. The son shall not bear the iniquity of the father, neither shall the father bear the iniquity of the son: the righteousness of the righteous shall be upon him, and the wickedness of the wicked shall be upon him.
No person is guilty of the sin of another person and will not bear their iniquity whether father or son.
So why would Canaan be cursed.
Gen 9:25 And he said, Cursed be Canaan; a servant of servants shall he be unto his brethren.
But the curse is only to be a servant to the offspring of his brethren and does not apply to wickedness being transferred to them by their father.
Also it was only Canaan and not the other sons for why weren't they cursed too.
Canaan's offspring is the Canaanites that inhabited Israel and the region before the Hebrews took over.
We are cursed by Adam and Eve's sin by having to labor more harshly to supply our food, but we are also cursed with dealing with insects, animals, violent humans, weather, and natural disasters being both dangerous and annoying.
But their sin does not fall upon us but when they ate of the tree it gave them a choice so all their offspring is born with a choice so they are born not knowing God so they will do wrong before they do right and follow God.
But in either instance the offspring is not guilty of their father's sin and have the right to salvation as anyone else.
King David lusted after a man's wife and put her husband in battle so he would die to have his wife.
Which they had a child Solomon which Solomon was not cursed but was blessed by God to be the wisest king in Israel.
It was David and Israel who were cursed with punishment but that was temporary.
In any case like Canaan and the offspring of Adam and Eve the curse would be physical but never to curse them from salvation.