Volvo Repair: S80 T-6 A/C SMELL, drain tube, musty smell

Question
I HAVE A MUSTY SMELL COMING FROM THE A/C OF MY 02 S80 T-6. CAN'T FIND THAT THE DRAIN TUBE TO CHECK FOR OBSTRUCTION. IS THERE ANY WAY TO REMOVE THE SMELL?

Answer
Place a small pan half filled with a 50/50 mixture of bleach and vinegar on the passenger side floor. Roll up the windows, turn the heat on full blast and depress the recirc button for the ac. Close it up and let it run for an hour.When you come back open the door cautiously, the odor will be strong. Carefully remove the pan, don't spill it. Repeat if necessary. If the mold has gotten into the padding or carpet you may have to have it professionally cleaned or replaced.