Even if you could, you don't want to. If you die within the 2 year contestability period...the life insurance company can contest your entire application because you lied about not smoking. So there is no point in trying to fool the company, when your family can pay the ultimate price by losing you and the life insurance money that they need.
Many life insurance companies offer reconsideration, after a period of time if you quit smoking, they may offer you a reconsideration of rating...essentially paying for non-smoker rates. Usually a few years after you quit smoking.
I know this because I work in the life insurance industry. So please don't give the insurance companies a reason to deny a claim!
I've read that Nicotine is detectable in blood & urine for 2-4 days. If you could go at least 4 days without smoking, you have a chance of passing if this is true. There's really no way to fool a test.
Yes get sure jell that you can foods with. Drink half of that in water , pee 4 or 5 times then your good to go, really works