Covered my nose when I walk by public smoking

So I went out to eat today and there was like 5 people standing directly in front of the entrance smoking cigarettes, so I covered my face with my friends jacket so I wouldn't breath it in and the people were laughing at me and one of them said "look at this drama queen" I'm visibly pregnant so idk why they even said that. Isn't second hand smoke dangerous to a fetus? Or am I really being a drama queen?