Yes, until the autopsy is performed. Then your beneficiaries will get only the premiums back, if that much.
You would be guilty of insurance fraud. The life insurance company will want to see your medical records and the death certificate prior to paying out a death claim on your life insurance policy.
It's called loss mitigation - find an excuse to avoid paying . The death certificate not only lists the cause of death, but other factors regarding your health.
Trying to save money on the life insurance premiums will benefit you, but shortchange your family in the long run.
All major life insurance carriers do a medical check up before they accept the policy. If they find nicotine in your blood the premium would be rated and charged premiums as a smoker. So, they may still accept you, but your premiums wuld be higher. It's best to answer all questions truthfully on your application for life insurance.
In addition, there are life insurance with no medical exam policies that offer up to $500,000 of life insurance without you having to take any physical examination, blood or urine tests.