An expeller is just a screw press. Get your terminology right if you're going to chase the latest food demonizing fad.

And yes, lots of oils are extracted by mashing up biologicals mixing it with a solvent like hexane and then evaporating off the solvent leaving a trace <1ppm behind.

I filled my gas tank today and did some spray painting without entirely appropriate ventilation. I'm sure most people regularly expose themselves to a little bit of organic solvent on a regular basis without a second thought or moralizing about it.