Secondhand cigarette smoke is a combination of smoke from the burning end of a cigarette and the smoke breathed out by smokers. Exposure to secondhand smoke has been linked to cardiovascular disease, Can you get second hand smoke from a vape Study finds secondhand smoke may be source of lead exposure in children, adolescents Vital Record Secondhand vape plumes could form lung damaging radicals American Chemical Society Effects Of Second Hand Vape Smoke Does cannabis create thirdhand smoke?