The rain in spain shows traces of cocaine. The air in Barcelona and Madrid is said to be laced with cocaine and other drugs.

Tests have found the air in the Spanish cities contains more illegal drugs than most European cities - most prominently cocaine.

A study by CSIC, (Consejo Superior de Investigaciones Científicas) also found traces of amphetamines, heroin, cannabis and LSD in the air.

But it was the level of cocaine which socked researchers, there was eight times the amount in Rome -  850 picograms per cubic metre of air compared to 100.

However even at this level it would take 1,000 years of breathing it in to be equal to one dose ... sorry if I have just spoilt your holiday plans.