I live in a mobile home. There is a smell that showed up approximately 1.5 weeks ago. It smells similar to the odor of a perm. It is no where specific. Stronger at the front entrance way than anywhere else but I have sniffed everything and while the odor is near the walls/floors/shoes etc. it doesn't seem to actually be coming from any of them. My first idea was to check under the home for dead animals that may be thawing as it's spring. However, the access panel is stuck in the frozen ground. I do not want to have to wait a few more weeks with this smell to eventually be able to get under there and find out that it's nothing under there.

Any ideas of what I should be checking on or why I can't find the actual source of the smell?

You will have to thaw out the access panel to get under the home and check it out. Sounds like something got under your home and died. Common occurrence in mobile homes. Little animals or cats get under mobile homes and can't get out.

As a guy, I'm not sure what a perm smells like. Fingernail polish? Burnt? Rotten? Sweet? Sour? I haven't a clue.

We got under the home. Nothing there! No smells and I crawled around and found nothing at all. The smell is still in the home.
The smell would be described as a rotten sweet smell. It's not sour. Maybe like a really sweet burnt hair smell. Still can't find a source in the house. I try to follow where the smell is coming from but it's almost like it's moving. The concentration of it is near the front door but I have literally smelled every pair of shoes and coat, etc. we have. Just can't find a specific area that it's obviously coming from.

The "smell" could be trapped between the belly membrane and the floor area.

That smell could be from wiring heating up. Get somebody to check your electric supply before it shorts and causes a fire.

Thank you so much everyone for all the help. Found the source... my daughter's rubber boots!

The day that I went around and smelled all the shoes and everything she had been playing outside so her boots weren't involved in the sniffing. She wears them to the lake and plays in the water and I think somehow the cushion part of the boot molded and stunk up my whole home!

Again, thanks for all the help.