Mom has underarm odor, but can a son have it without a son?

Hello, my friend. According to your description, bromhidrosis is inherited, which should be the dominant inheritance of X chromosome, and the probability of inheritance is about 50-60%. According to your description, if the mother has bromhidrosis, there is a 50-50 chance that the daughter and son will inherit it, and the inherited daughter will inherit it just like the mother, that is, if you are a woman, your offspring will have a 50-50 chance that both men and women will have it, while if you are a man, then the daughter will definitely have it, but the son will not necessarily inherit it. I hope my reply can help you.