Oh that's interesting. A range hood that recirculates? I didn't know that was even a thing. Must have a very powerful HEPA filter in there or something; not sure how safe I would feel with that.

I suppose I'll just be more proactive using my indoor air monitor when cooking; albeit it's hard to know for sure. The monitor always shows a non trivial ambient level of VOCs; so it's hard to know what is safe, what is from cooking, what can be prevented, etc..