All E Cigarettes Emit Harmful Chemicals, but Some Emit More Than Others Berkeley Lab Berkeley Lab News Center E cigarettes and vaping DrugWise Bigger, stronger, and cheaper: Disposable e cigarettes have more nicotine and are more accessible than ever 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 Vaping: How E cigs Work (Infographic) Live Science