Honda 2 Wheelers India — My scooty

Address:

Khordha, Odisha, 751020

From two three days my scooty is creating a weird sound for today when i started my scooty a very disturbing sound and i showed my scooty to a local garage centre he said not to ride anymore and he said there is some prob in my engine but as per i know sound hapns due to chain box.. so please tell me what is the actual prob i cnt ride now coz it may create more damage to my scooty as per the local garage worker said so please help me out...