Make sure which part of Dive Mini was clogged.
The bubble was clogged, try to soak it in the water to clean it.
If the battery was clogged, try to use t tine q-tip to clean the airflow.
And if the heat tip was clogged, please try to install a brand new vape tip.
Sometime the heat coil was burn out and can't produce any smoke.
Further questions, please comment below.