My strongest hive started with some yeast smell yesterday. Today I did an inspection and everything looks good. No mites, no beetles, no moths, and no other maladies so far. The hive was installed beginning May this year. I saw eggs, capped brood, lots of pollen, and capped honey. Very good pattern, very few drone cells. Lots of bees. I use a screened button board, which is kept open for ventilation. The super has a 3/4" hole and the inner cover also has an opening. I think the yeast smell is in the pollen. Do I need to worry?