Smoking in cars with children is now illegal since January 30, 2018. Violations would result in a fine of up to $100. When a child breathes in secondhand smoke, they breathe in thousands of chemicals, as much as the smoker does. This outs the child at risk of serious conditions, like cancer, bronchitis and pneumonia. If the child as asthma, it can worsen it. This law applies to an private vehicle that is enclosed wholly or partly by a roof. It still applies if people have their windows on, air conditioning on or if they’re parked with a door open.