Secondhand
smoke in a cars and other vehicles is toxic
A small space can make secondhand smoke even more dangerous to children, pets and passengers.
Even with the driver's window slightly open, Secondhand smoke levels can hit levels rated "hazardous" by the U.S. Environmental Protection Agency (EPA).
With a passenger window fully open in a car traveling at 20 miles per hour, smoking will raise the average level of toxic secondhand smoke particles to twice the unhealthy level.
Under the same conditions, secondhand smoke levels can reach nearly ten times the unhealthy level.
Tips on making sure that the air in your car is safe for all passengers: