IF you use Recirculate a lot, make sure that the air intake is set to Fresh and the A/C is off for the last minute of drives in Summer. Also use a higher fan speed for that minute. If you want a less toxic mold inhibitor, I've used vodka mixed with apple cider vinegar. Just avoid getting that on plastic trim, rubber pieces, and exterior paint, as it's acidic.
2013 "Brilliant Silver" SV with Premium and no QC, a 2009 Vectrix VX-1 W/18 Leaf modules, and 3 EZIP E-bicycles.
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.