Bee Hives under belly pans - is that the smell?

[godaddy64]

Hey folks,

I've had good luck searching these forums for help on almost anything, but here's one I couldn't find much about:

As a newbie, I already went through all the normal steps for odor elimination, from leaky roof fixtures up top to broken drainage valves down below. Replaced the toilet, removed the shag carpet all around. I'm airing out the floor for anther couple of weeks before I seal/primer it and glue down a cork floor.

But the fact is, there is still a lingering smell that everybody notices upon entry, and it bugs the snot out of me. It's not a sewagey smell or a moldy smell -I know those too well already. It's a sweet kind of smell that appears similar to what many people here have described as boiling batteries, propane gas leaks or dead rodents. I was beginning to think it's a dead rodent, and today I began groveling around under the front of the trailer, peeping in through the holes and sniffing around.

I quickly found several little beehives in the two places I could look: In the banana-skinned compartment around the drop-down steps under the door, and by the hole for the main electric cable where it enters the sub-floor belly pan. The hives *seem* old and abandoned, and I could see some dead bugs on the bottom with my little inspection mirror. Could this be the source of that sickly sweet rotting smell? I googled:

Get Rid of Bees - Bad smell coming from my wall

I'm beginning to think this scenario applies to my Cradle of Love: Beehive attracts mouse, bees kill mouse upon entry, decomposition begins. And now I'm bracing for some more quality time groveling under the trailer with a drill in my hand... not fun.

Anybody share a similar experience? Tips or tricks to make this less painful?