Dangers of vaping and second hand vaping are greatly underestimated Earth.com City Did you know that Secondhand vape and cigarette smoke have similar nicotine levels? For tips on how to protect yourself and your loved ones from toxic secondhand smoke please visit Woman Vaping Man Suffering Secondhand Smoke Stock Photo 2692131685 Shutterstock How Bad Is Second Hand Vape Smoke Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky