It is possible for people to procreate with Jinns. And they can produce children, hybrid children, who are not real people.
Genesis 6:22 That the
sons of God saw the
daughters of men that they
were fair; and they took
them wives of all which they chose.
4 ...when the sons of God came in unto the daughters of men, and
they bare children to them...
If you want to know more about this...