More than 80% of second-hand smoke is invisible

More than 80% of second-hand smoke is invisible and odourless, so no matter how careful you think you’re being, your family still breathes in harmful poisons, putting them at risk of meningitis, cancer, bronchitis and pneumonia.

Source: Secondhand smoke @ NHS Smokefree

image: Cigarette by Sudipto Sarkar under Creative Commons license