Grey Water Odor - 2670MK

[Sparky2019$]

Hi all. We've been on the road with our 2019 2670MK for about a month now. This past week we started noticing an odor the moment we turn on any exhaust fan in the trailer. It is not black tank odor.. thankfully. It seemed strongest in the kitchen area-- both under the sink and in the pantry next to the fridge, so I replaced the burp valve under the kitchen counter. That did not help. I also went under the trailer and dropped down the belly wrap in several locations.. especially near the holding tanks. Everything is relatively dry. About a cup of water came out in one area, but I figure that might have been from driving in the rain. So long as we keep positive pressure inside the trailer (AC on, windows closed and vents closed) there is no odor.
Has anyone had this grey tank odor issue.. or have suggestions as to what I might check?

Thanks in advance- Paul

[zadiemay]

Sparky, unfortunately I have no idea, but love to hear what everyone has to say!

[gbkims]

Tips for odors/smells:
Stench under the bathroom cabinet Post 39
New Odor Source Located
Septic odor 310-GK bathroom--NOT AAV Post 16

[Houndbb]

Hi all. We've been on the road with our 2019 2670MK for about a month now. This past week we started noticing an odor the moment we turn on any exhaust fan in the trailer. It is not black tank odor.. thankfully. It seemed strongest in the kitchen area-- both under the sink and in the pantry next to the fridge, so I replaced the burp valve under the kitchen counter. That did not help. I also went under the trailer and dropped down the belly wrap in several locations.. especially near the holding tanks. Everything is relatively dry. About a cup of water came out in one area, but I figure that might have been from driving in the rain. So long as we keep positive pressure inside the trailer (AC on, windows closed and vents closed) there is no odor.
Has anyone had this grey tank odor issue.. or have suggestions as to what I might check?

Thanks in advance- Paul

Paul, In addition to ensuring both AAVs are functioning properly, as Gene recommends above, you might consider adding tank treatment (enzymes for breakdown, like Camco citrus or Rid-X for RVs) in both grey tanks. We use about half the amount recommended for the black tank in each grey tank.
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