Pollution studies carried out in major Spanish cities have detected drugs in the air. Tests, which were carried out in the cities of Madrid and Barcelona, detected trace amounts of cocaine, amphetamines, opiates, cannabinoids and lysergic acid.
While there was significantly more cocaine detected than any of the other drugs, the the Superior Council of Scientific Investigations stressed that there was no cause for concern.
According to scientist Miren Lopez de Alda:
Not even if we lived for a thousand years would we consume the equivalent of a dose of cocaine by breathing this air.
Furthermore, they noted that the locations of the test sites probably skewed their results. Both test sites were near universities and one of them was near a building that had been used by drug dealers.
