The concentration of antifreeze vapors inside a car is usually very low, and the ventilation system helps circulate and disperse any potential fumes. To experience poisoning effects, significant exposure to high concentrations of antifreeze fumes over a prolonged period would be necessary.
However, it's still essential to practice caution and avoid direct contact with antifreeze or inhaling concentrated vapors. If you suspect a leak or spill, it's advisable to address the issue promptly and ensure proper ventilation. Additionally, if you experience symptoms such as dizziness, nausea, or respiratory irritation while driving, it's best to pull over and seek medical attention.