Smoking

My bf smokes. He knows he should quit and wants to. I don’t really say anything because I know it’s hard and I don’t wanna pressure him. However, im thinking about our future more and more and get worried. I want to start saying something but I don’t want to make him feel bad. I work in healthcare, I feel like I should be more proactive in educating him on health related things but I know it’s ultimately up to him to decide. it’s not about me. however if we bring kids into the world, it’s all about them. ill be so worried. He usually vapes in the house around me, and I also have asthma. I don’t want that for my future kids. I love him and don’t wanna put pressure on him, what should I do??