I bought a cabinet with a glass door to put my 1/6 scale figures in (pic related is basically how it looks) but I have noticed that there is a smell coming from inside the cabinet and the longer I keep the doors shut, the stronger the smell is when I open it.

It's not coming from the figures cos I've taken them out and the smell just won't go away.

Is there anything I could do to try and get rid of the smell?

idk if it's safe to keep my figures then in a cabinet like this.

I know most have just glass cases that they put these types of figures in.