Is it permissible to use infant formula (HIPP) that contains the substance (LACTOBACILLUS) extracted from the milk of an unknown woman for a five-month-old child?

If it is confirmed that milk has been mixed with a woman’s milk, it is safer to avoid it, because some scholars have ruled that a woman’s milk is absolutely forbidden, and due to the unknown identity of the woman, which might lead to the child marrying one of the wet nurse’s daughters in the future.