Is Secondhand Marijuana Smoke Dangerous? Biologist Says YesAccording to a professor at the University of California, San Francisco, marijuana smoke is three times worse for the arterial walls than cigarette smoke.
Travelers At DIA At More Risk From Secondhand SmokeTravelers at Denver International Airport are at a higher risk than most other airports for dangerous exposure to secondhand smoke, according to a new survey from the Centers for Disease Control and Prevention.