In-laws are close relatives.

You don't have to worry about this. The reason why we don't advocate consanguineous marriage is that two people who are married by close relatives have the same recessive gene (the recessive gene mentioned here is the one that causes genetic diseases), and then the offspring have a higher probability of getting this genetic disease (there is no need to consider the genetic disease controlled by dominant genes here, because if it is a genetic disease controlled by dominant genes, then one of your in-laws must be deaf). If their offspring don't have any genetic diseases, it means that this offspring doesn't inherit the recessive genes of his parents, or only inherits one (only two will get sick at the same time). Of course, don't worry if you don't inherit, even if you inherit one. In fact, each of us has this invisible and pathogenic genetic gene, but everyone does not carry the disease. As long as it's not a close relative getting married and getting sick, it's basically equal to winning the lottery! So as long as you two are not close relatives, don't worry, you can have a baby with peace of mind.