Manufactured home, wife smells methane gas(Poop) coming from master bedroom ac floor vents. Just that one room.

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wife smells methane gas(Poop) coming from master bedroom ac floor vents.

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Are there any wet spots in the sub floor under the unit? It sounds like the drainage line is leaking into the AC events. Sewer gas is harmful to your health and the methane content is explosive. Have it checked ASAP. Good luck, Tom