Regardless of where the exposure takes place -- outside or inside, secondhand smoke poses health risks to children. The U.S. Surgeon General has found that there is no safe level of exposure.
Is outdoor exposure comparable to indoors?
Whether the exposure occurs indoors or outdoors the adverse health effects remain the same. The only difference is that indoors the concentration of the harmful chemicals, compounds, and particles is kept in doesn't go away as quickly as outdoors.
Read more at Smoke-free Homes and Cars Program at www.epa.gov/smokefree