Question

there are more chances of catching cold in public places. Why?

Answer 1

That depends what type of place u are at.. Suppose if your at a place that is having some dust or dirt it can give more chances of catching cold or getting sick.

Answer 2

There are more chances of catching cold at public places because:
~There are many people at a public place .
~You never know the type of air borne disease they are affected with.
~Common cold is also an air borne disease.
~When an individual is affected with any air borne disease and spots or coughs or sneezes at a public place the disease causing bacteria or virus etc. comes out in small droplets in sneeze or cough and in large amount in saliva . These droplets circulate in the air.
~So it is very easy for an individual to get affected by these bacteria/viruses .
~therefore there are more chances of catching cold at public places.