When meth is cooked, “the chemicals spread throughout the house. The methamphetamine is deposited everywhere, from walls and carpets to microwaves, tabletops and clothing. Children living in those labs might as well be taking the drug directly.” – Researcher at the National Jewish Medical and Research Center in Denver, Colorado, which found that the process of cooking methamphetamine produces a cloud of hydrochloric acid and methamphetamine that spreads throughout an apartment, home, or other structure.