Fans help disperse fumes from buses

Installing fans at small bus stops may not be a good idea, but installing them at bus stops which have high traffic is a necessity ("Fans at bus stops to cool you down? Cool!"; July 25).

Fans help to not only cool the place, but also, more importantly, to ventilate the area and quickly disperse the exhaust fumes from buses.

Such gases are pollutive, and even a 10-minute wait at a polluted bus stop can compromise one's health.

Bus-stop design is also important. For instance, the design of the bus stop at VivoCity traps fumes instead of promoting free, all-round air circulation.

John Wee