If you live in Madrid or Barcelona, you might not notice the air pollution due to your contact buzz according to a new study. The Superior Council of Scientific Investigations found the air in those cities to be laced with at least five drugs: amphetamines, opiates, cannabinoids, lysergic acid and most prominently cocaine. Researchers found cocaine in concentrations between 29 and 850 picogram per cubic meter of air. The group stresses that the air samples were taken in high drug areas and don't represent most of the air in the cities.