Teens can (and do) get high off of mothballs.  Mothballs are used to keep moths away from your clothes (so they don’t eat them).  The way the mothballs work is that they emit a gas that repels moths.  The chemical they use is paradicholobenzene.  Well, if you place a lot of mothballs into a bag and begin huffing, you will achieve a high from it.

Effects and Risks

“Like many inhalants, mothballs cause lightheadedness, dizziness and lethargywhen abused. Headaches, nausea, vomiting and stomach pain are also common symptoms, and inhaling the harsh chemicals irritates the airways and eyes. Users lose coordination, become mentally impaired (often apparent through slurred speech), develop weakness in their limbs and, in some cases, develop scaly patches of skin.

In the long-term, there are many potential risks to mothball abuse. Weight loss is common with regular exposure, and pregnant women have been reported to develop anemia. The most potentially damaging effects are liver failure, kidney failure, convulsions and coma. There are differences between the effects of naphthalene and paradichlorobenzene, but the overall impacts are relatively similar. Paradichlorobenzene may be less toxic, but liver and kidney disease have been reported.”