I PURCHASED A NEW LEXUS GX 470 IN NOVEMBER 2007. IT ALWAYS SMELLED MUSTY. I TOOK IT TO DEALER TWO TIMES AND A 3RD PARTY MECHANIC ONCE. LEXUS TOLD ME IT WAS MOLD BUILD UP IN AC UNIT. THEY SAID IT OCCURRED BECAUSE I PUT THE AIR FLOW ON INTERIOR AIR FLOW ONLY. ME AND MY 2 CHILDREN HAVE HAD ASTHMA ATTACKS AND ALLERGIC REACTIONS SINCE THE VEHICLE WAS PURCHASED. THEY HAVE HAD TO INCREASE THEIR ALLERGY MEDICATION AND I HAVE BEEN PUT ON A PRESCRIPTION. *TR