@Tangible recently described how his parked Clarity ran of juice for the heater while his wife waited stoically in a parking lot. A reader asked if she was OK without the heater and @Tangible replied, "She is a mammal, and able to maintain her internal temperature under a variety of circumstances. For this reason, I do not recommend marrying reptiles." That sparked a thought for me. Well, two thoughts. Over the winter I have had this gradually encroaching odor in my Clarity which today I wrongly attributed to my wife's recent use of Tea Tree Oil Shampoo. Thinking I should quickly change that conversation, I told her about @Tangible's mammalian observation--then it struck me. Could I have been harboring a creature seeking internal temperature maintenance? I checked the cabin filter and the picture shows what I found. The smell is gone now, so I think the cause was a mouse nest--unless one of you Clarity mavens are going to tell me this is space-age insulation material specially designed by Honda to make us more comfortable in winter climes.