Odor from HVAC vents on Chrysler 300

Some vehicles may develop a musty odor coming from the HVAC system, Dodge has issued a cleaner/disinfectant and a coating for the evaporator designed to inhibit bacterial growth.

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Average mileage: 69,280 (23,000–115,000)
7 model years affected: 2005, 2006, 2007, 2008, more2009, 2010, 2013
34 people reported this problem
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problem details
bad odor in car when you turn on a/c
2010 Chrysler 300 75,000 mi,
Smells like coolant is coming from the air vents when I run the heater or defroster. Your eyes burn and you get a headache. Also my windows smog up and it takes a while to clear.
2005 Chrysler 300 100,000 mi,
musty smell in ac
bought the car in march, 2010 with 14000 miles on it and have always noticed a musty smell coming from the vents mostly when using the a/c. now the car has 44000 miles on it and the front passenger side floor board has been wet the last few times i have driven it in the rain.i have checked the cabin filter under the hood and was damp,looks like water could very easily come in through this vent, but havent yet proved it.
2008 Chrysler 300 53,000 mi,
I tried household deorderizer
2005 Chrysler 300 40,000 mi,
Musty smell from the HVAC system
2006 Chrysler 300 110,000 mi,
Odor coming from AC once turned on along with heat blowing from vent without turning AC on. No fix found yet.
2007 Chrysler 300 112,000 mi,
musty smell from air conditioning
2013 Chrysler 300 43,254 mi,
2013 Chrysler 300 s purchased used, and the car had musty odor from ac, and low pitch tapping sound behind dash. Dealer replaced blower motor.. problem resolved
2007 Chrysler 300 75,000 mi,
Musty odor comes from vent when recirculating air. No smell with heat or AC.
musty stale smell from the vents when A/C is on, especialy when on re-circ.
musty odor when air is on for 2 years. Now it blows only hot air from the passengers side when the air is on.