Tests showed people in Mexico City — a sprawling metropolis crammed with around 20 million people and 4 million cars — struggled to sniff out everyday odors like coffee and orange juice compared to residents of a nearby town.
Their noses are so badly damaged from a life inhaling toxic particles that they also find it harder to detect the scent of rotten food, said researcher Robyn Hudson at Mexico’s National Autonomous University (UNAM) who ran the study.
Mexico City is one of the world’s most polluted capitals, along with Beijing, blighted by its thin high-altitude air and a ring of surrounding mountains that trap exhaust fumes belched from smoky buses and factories on the city outskirts.
Mexico City’s ozone levels exceed World Health Organization standards on approximately 300 days of the year.
City authorities have worked to remove the worst-polluting vehicles from the road, but as the capital’s population grows it buys up to 250,000 new cars each year.
A 10 percent drop in toxic air particles could save 3,000 lives a year and prevent 10,000 cases of chronic bronchitis, says pollution watchdog The Blacksmith Institute.
-from www.planetark.com
If possible try to reduce your vehicle use by 10%
Automobiles have 15% fuel to wheel efficiency