Your lagna is Capricorn which is a movable sign. Hence Mars is badhaka. you are running Mars dasa upto 18th may 2017. But Mars is also the lord of 3rd house which is house for longevity. When badhaka and maraka periods run and at the same time transit should also agree, then only death is envisaged. In your case Mars is in the star of Jupiter lord of 2 and 11. through sub it is signfying 6 (negating house to 7th).Then you need not worry about danger.