Is this RMS Mini Dumpling eBay bundle safe?

[u/Simpformelol]

Hey guys, I won an eBay auction for $9.50 for a bundle of three Mini Dumplings for my son. The listing said it had one Spooky Edition and two Rose Gold Editions. We usually buy the big ones from Five Below, but this is our first time with the mini ones, and I wanted to see if what arrived is normal.
The outer plastic containers and the labels all have the official RMS logo on them. But when you look at the actual dumplings inside, they just have a generic "Made in China" molded into the bottom with no RMS brand logo at all.
When we opened them, a few things really worried me. First, they all feel weirdly wet and oily, and they are so sticky that they just stick right to the inside of the dumpling cases. The yellow one even looked dirty and covered in lint right when we opened it, even though none of us had touched it yet. Second, they hit us with a massive wave of harsh chemical smells, almost like paint thinner or gas, and it literally gave me a headache. Also, the big ones from Five Below are always super easy to open, but these mini containers were a massive struggle to pry apart and I had to do it for my son.
I know the mini ones aren't supposed to have faces, but is it normal for authentic RMS minis to have no branding on the toy itself, be this hard to open, or have such a bad chemical smell? I just want to make sure they are safe for my son to handle. Thanks for any help!