The smoke……(здесь ничего)……….quickly prevents the thief from………….clearly.

The inventors of the system believe it will be effective……………… to the fact that it was made with the help of the former car thieves. These thieves came up with some good ideas to………..the system virtually foolproof.

и ещё сомневаюсь насчёт артикля здесь (я думаю, что неопределённый):
Stopping car thieves is…an…….idea behind a new security system called “fire”.

The smoke SPREAD/SPREADING quickly prevents the thief from SEEING clearly.

The inventors of the system believe it will be effective DUE to the fact that it was made with the help of the former car thieves. These thieves came up with some good ideas to RENDER/MAKE the system virtually foolproof.

Stopping car thieves is THE idea behind a new security system called “fire” (if this is the one an only idea)