just got an emergency call,the old guy coughed up blood and died,the spot is 2 ft by 2 ft,the last time i dealt with this was when the royal oak post office got shot up,but we used shovels and hoses.this is in the carpet. i have 40 vol, i have prochem odor rescue,i have Hydrocide.and a small claw. where should i start -sniff