What do you suggest if i have a small lump in my neck. is it possible that my lymph nodes are at risk?

Have it checked: Lumps in the neck can be caused by a number of things ranging from from benign (like lymph nodes responding to an infection, cysts, or non-cancerous tumors) to serious things like cancer. Any neck lumps in someone who smokes are especially worrisome and should be checked by a physician. See your doctor so he/she can do an exam and recommend a specialist if needed (like an ENT doctor).