While smoking cigarattes, the smoke we inhale and the smoke we puff after inhaling are the same if not what is the difference?

Question

While smoking cigarattes, the smoke we inhale and the smoke we puff after inhaling are the same if not what is the difference?

In: Other

Answer 1

The smoke you inhale has lots of stuff in it. 

When you inhale it, a lot of that stuff sticks to your lungs. 

When you exhale, the smoke you blow out doesn’t have those things in it anymore, because they are stuck to your lungs (and the inside of your mouth, and your throat, etc).