I watched some clips from an old Puerto Rican gossip show I used to watch when I was a kid. It was a funny show and I wish I can find full episodes of it somewhere.
It contains herbs and cloves in place of tobacco, and is said to be “healthier” and safer than normal cigarette. The nicotine content is only as little as about 0.05 mg. In addition it is claimed to be free or dangerous chemicals present on regular cigarettes
Some people who smoked them experienced detoxification, which means, the herbal mixture worked