He is still seriously hurting your mom and brothers/sisters too. e-cigarettes have been proven to be a major source of Thirdhand nicotine exposure, so even if your father does not do it around you, the vape residue gets on the floor, walls, car, and anywhere he has been, including his hair and skin. This can easily get into your body and has been detected up to 30 years later in a room after a person smoked.
Thirdhand smoke can be just as dangerous as secondhand smoke. Don't be fooled into thinking you can be safe by just not being around him when he smokes. Terrible diseases like asthma, emphysema, and lung cancer are much more common in people who have been around smokers. They are also among the leading killers in the world. Please tell you dad to stop!
I know you don't want links, but here are some for info on thirdhand smoke