2014 HONDA RIDGELINE Engine Problems

IN DECEMBER 2016 I BEGAN TO NOTICE BILLOWING CLOUDS OF BLUE SMOKE FROM MY EXHAUST PIPE ON STARTUP. ON WATCHING THE PROBLEM FOR THE NEXT COUPLE OF WEEKS I NOTICED THAT IT HAPPENED INTERMITTENTLY, USUALLY (BUT NOT ALWAYS) WHEN THE ENGINE WAS COLD. FOLLOWING THE INITIAL BLUE CLOUD (DEFINITELY NOT BLACK OR WHITE SMOKE), ANY EXHAUST GASES BECAME INVISIBLE (BUT I AM UNABLE TO DETERMINE WHETHER MY TRUCK WAS SMOKING FROM THE EXHAUST WHEN I WAS DRIVING). I ALSO NOTICED THAT WHEN I STARTED IT UP WHILE IN THE DRIVEWAY (WITH THE INTENTION OF PULLING THE TRUCK INTO MY GARAGE), EVEN IF THERE WAS NO SMOKE VISIBLE THE GARAGE WOULD FILL WITH FUMES ? IT WAS SO BAD THAT I WOULD HAVE TO HOLD MY BREATH, EXIT THE TRUCK, AND SPRINT INTO MY HOUSE TO AVOID INHALING THOSE FUMES. IT QUICKLY BECAME APPARENT TO ME (AS AN AMATEUR MECHANIC) THAT...