Another Gross Reason to Put Down the E Cigarettes American Lung Association E Cigarettes and Hookah Smoke Free Georgia Coalition The inhalation of second hand smoke from the tip of a cigarette is known as side stream smoke and is a recognized cancer causing agent. But why? Side stream smoke is made at lower temperatures than Secondhand Exposure to E Cigarettes Puts COPD Patients At Risk Respiratory Therapy How secondhand smoke, thirdhand smoke & vaping affects kids