do e cigarettes use tobacco What are e-cigarettes and their health effects Electronic cigarette - Wikipedia
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The smell comes from pheromones, droppings, dead roaches, and secretions

The demand for e-cigarettes has caused a rapid boom in a still growing market, with annual sales around $1.7 Billion in 2014 (depicted in the graph below), with estimations for continued growth in 2015 and beyond

Total 160 cigarettes (Box of 160)

Irritants introduced at any point can cascade through the system, so a stuffy nose, raspy voice, and ear pressure often stem from the same exposure
Even less is known about home e-cigarette use restrictions, including the extent of their presence and their association with behaviors of concurrent use and cessation behaviors and related outcomes

Long-Term Effects: 2530% higher risk of heart disease in non-smokers Increased likelihood of stroke and heart failure Greater chance of needing interventions like angiography or pacemaker implants Explore Angiography: What Patients Should Know for details on diagnosis