All eating disorders are harmful and I think there seems to be this misconception that anorexia is in some way superior which absolutely isn’t the case.
You don’t have to be physically dependent on alcohol to have a problem. There are many people who never go to a GP or get diagnosed as being alcohol dependent.
Secondhand smoke is dangerous, especially for children. The best way to protect loved ones is to quit smoking. At the very least, make sure you have a smokefree home and car.