Hi Bimal Kumar Bhagat
Welcome to HealthcareMagic.
Tobacco in any form can cause high risk of cancer.Smokeless tobacco ,in chewable forms can increase the risk of oral cancer
.Tobacco with smoke like in smoking
cigarette carries a higher risk of cancer due to combusted materials.
There could infections due to chronic usage of tobacco in local area.
any clarification or information feel free to mail me.