Vapor cigarettes

Husband doesn't care that his mother was using a vapor cigarette near me (or our 9yo), I'm 37 weeks pregnant, it was in our house and all he had to say later when I mentioned it was that I could have moved and she wasn't blowing it in my face and its vegetable oil...like seriously there's other shit in there too! What if she does it once our newborn is here? Gonna be fine with that too because it's not in his face! Uggghh 😩 I've hardly ever had an issue with my in laws, but this one thing and my husband doesn't say anything....