cigarettes are harmful to health Effects of Smoking Chart πSmoking harms nearly every organ
Description
1 2 "Electronic cigarettes: review of use, content, safety, effects on smokers and potential for harm and benefit" (PDF)
Thats why you have to fill the void left

Breathing Seek immediate medical attention if: A sick person of any age is having trouble breathing (not caused by a stuffy nose)

Cooperation Centre for Scientific Research Relative to Tobacco (CORESTA) Monitor (CM4 and CM6) reference cigarettes were received from CORESTA (Paris, France) (Table 3)

You could try contacting your local Stop Smoking Services or chatting to your GP
Less Oxygen in Blood: Carbon monoxide takes the place of oxygen in your blood, making your heart and body work harder to get enough oxygen
