Without a doubt ECigs.
There are only four ingredients in
ejuice.
Flavor
Nicotinr
propylene glycol
vegetable Glycerin.
There are thousands of chemicals in a cigarette.
There is all of the chemicals in the tobacco. Here are the additional ones.
There is the fumes of propane of lighter fluid pulled into your lungs as you light the cigarette.
Cigarette companies have to spray s chemical on the ground Tobacco to keep the dry Tobacco from poking through the paper. This is a carcinogen.
Are you aware that cigarette paper has been soaked in water and potassium nitrate. This is another carcinogen.
As the tobacco smolders it creates carbon monoxide.
In the UK both cigarettes and ECigs were tested and it was found that eCigs had a 98% harm reduction than cigarettes.
There has been a lot of research done by Dr. Farsalinos (SP).
You should also read the testimony of Brushy Bill here on ECF about his health improvement in COPD after switching from cigs to eCigs