Illinois could soon fine up to $100 to smokers if caught smoking in car with minors.

Illinois State Sen. Ira Silverstein  has proposed legislation (SB 2659) that would fine those who smoke with anyone under the age of 18 in the car with up to a $100.

Six other states: Arkansas, California, Louisiana, Maine, Oregon and Utah — already have similar bans on the books, though the cutoff age for child passenger svaries from state to state. Puerto Rico has also passed a ban.

Kathy Drea, vice president of advocacy of the American Lung Association’s Illinois chapter, testified in front of the Senate’s public health committee Tuesday. She saiddrivers who light up put their passengers at risk of a smoking-related illness due to the harmful secondhand smoke being experienced within the confined space of a vehicle.

The bill is a “very simple thing that you can do to protect all of our children from a very serious health risk,” Drea added, according to GateHouse Media.

No vote has yet been taken on the measure.

Oregon’s ban includes heftier fines of $250 for a first violation and $500 for additional instances.