DULLES, Va. (WTVR) - Consider this the next time you head to the airport, you could be breathing in secondhand smoke without knowing it.
The Centers for Disease Control released a new report today showing the air quality around designated smoking areas is five times worse than at smoke-free airports.
Only five of the US's largest airports allow smoking-- Washington Dulles International is one of them.
The others include Atlanta's Hartsfield-Jackson, Las Vegas' McCarran International, Denver International and Salt Lake City International.
The CDC points out there's no safe level of secondhand smoke.