[RamenRider]

Hello!

I think you can put that worry to rest. Plastic doesn't extrude fumes by itself, it has to physically change its form by melting or burning.

You might smell an unpleasent scent sometimes, especially from factory new products, but if you let fresh air in that's nothing dangerous. Hot days are also no problem, unless of course if gets hot enough for plastic to melt away.

Should you feel actual discomfort in the eyes or throat after being around your toys though, you might want to see a doctor. But if you're feeling fine and air your room properly there's no need to worry about becoming ill from having plastic figures around you.