I can't find source of fish-like odor in house.
There is a fish-like smell that comes and goes periodically in the house. Sometimes we can smell it in the hall by the linen closet. Now we can smell it in the kitchen. I never cook fish inside, only outside on the grill, and it's been a couple months since I did that. We don't eat fish very often. It comes and goes any time of the year so I don't think it's weather related. I've cleaned every nook-n-cranny. I need ideas on what to do to find the cause.