If you are on a bus and someone smokes before they get onto the can way smell cause health problems?

Secondhand smoke can cause a variety of health problems, including:

* Cancer: Secondhand smoke has been linked to an increased risk of lung cancer, as well as cancer of the head, neck, larynx, esophagus, stomach, pancreas, kidney, and cervix.

* Heart disease: Secondhand smoke can damage the heart and blood vessels, increasing the risk of heart disease, stroke, and peripheral artery disease.

* Stroke: Secondhand smoke can increase the risk of stroke by two to four times.

* COPD: Secondhand smoke can irritate the lungs and airways, leading to chronic obstructive pulmonary disease (COPD).

* Asthma: Secondhand smoke can trigger asthma attacks and make asthma symptoms worse.

* Sudden infant death syndrome (SIDS): Secondhand smoke increases the risk of SIDS by two to four times.

* Low birth weight: Secondhand smoke can lead to low birth weight and other birth defects.

* Ear infections: Secondhand smoke can increase the risk of ear infections in children.

These are just some of the health problems that can be caused by secondhand smoke. If you are exposed to secondhand smoke, it is important to take steps to protect your health.

Here are some tips for avoiding secondhand smoke:

* Ask smokers to smoke outside.

* Avoid places where smoking is allowed.

* If you live with a smoker, ask them to smoke outside and to wash their hands and clothes after smoking.

* Avoid touching surfaces that have been contaminated with secondhand smoke.

* Wash your hands frequently if you are exposed to secondhand smoke.

* Talk to your doctor about ways to protect yourself from secondhand smoke.