Smog away your sense of smell
A recent study conducted in Mexico City showed that high levels of air pollution can severely damage a person's sense of smell -- which is inextricably linked to your sense of taste. So, what's the point of eating gourmet in Mexico City again?
Robyn Hudson, a research scientist from Mexico's National Autonomous University, compared the olfactory senses of residents of Mexico City versus those from the nearby town of Tlaxcala. He conducted the research by adding a common stinky contaminant to food little by little until subjects rejected the food as disgusting. His team found that the small town folks could detect contaminants at much lower levels than the people from the capital city. Big surprise.
Inhabitants of Mexico City are subject to some of the highest levels of air pollution in the world, as a result, they were found to have trouble sniffing out simple odors like oranges or coffee. With 20 million people and 4 million cars crammed into one city, do the math -- Mexico City's ozone levels exceed WHO standards 300 days a year.
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