The health risks of being in a home or car that someone has smoked in.
People who live together or drive together are at risk if someone has recently smoked there.
You cannot see most of the smoke from second-hand smoke. The only way to protect people around you from second-hand smoke is to have a completely smokefree home and car.
When you smoke inside your home or car, everyone there is exposed to tobacco smoke.
Babies and children are at more risk as they breathe faster and more often. Their lungs and airways are also less developed.