Hi bappa ;
welcome to HealthcareMagic
If you want to quit smoking
then you should do it on your own will there is no other way.People use nicotine
gum called NICORETTE
but using it is like you are just shifting from one form of nicotine to another so if you have to stop please do it yourself there is no medicine available.As for a chest physician in Siliguri please contact the local doctor he will guide you.