More bad news about vaping: Teens increasingly are breathing in secondhand e cigarette vapors, report says Chicago Tribune We break down the key differences between traditional cigarettes and e cigarettescovering: 1 Their compositions and ingredients. 2 The health risks associated with both. 3 Nicotine levels and addiction potential. 4 The impact Secondhand Smoke Exposure Is No Longer on the Decline, Study Shows Your Children Are Adversely Affected by Your Secondhand Smoke! TEIS, Inc