How do they film minors smoking?

Many movies
depict children and minors (and non smoking actors) actively smoking a cigarette and
blowing actual smoke. How is that done?

class="post-text" itemprop="text">

class="normal">Answer

Actually the film
makers claim that the cigarettes used by the minors are tobacco-free
cigarettes or nicotine-free cigarettes. They
are commonly called herbal
cigarette.

According to href="http://en.wikipedia.org/wiki/Herbal_cigarette"
rel="noreferrer">wikipedia,

Herbal cigarettes are also used in acting scenes by performers who

are non-smokers, or -- as is becoming increasingly common -- where

anti-smoking legislation prohibits the use of tobacco in public
spaces.Herbal
cigarettes are not viewed as physically addictive, as they do not contain addictive
substances.

src="https://i.stack.imgur.com/5Ua54.jpg" alt="picture of packet of herbal
cigarettes">