I thought I had read somewhere that home range hoods tended to not be deep enough or have high enough airflow to capture combustion products from gas stoves, but I'm having trouble finding that now. I did find this article that says they measured 80-95% reduction of pollutants which seems pretty good with 108 L/s airflow which is achievable:

https://www.osti.gov/servlets/purl/1420274

It's possible that what I was reading before was discussing direct capture of the combustion products, but it stands to reason that if you're exhausting a lot of air with the range hood it's going to limit the concentration of pollutants by cycling the air in the entire kitchen. Alternatively I could just be remembering incorrectly!

My range hood is unfortunately configured to recirculate, and it's not in a convenient location to duct to the outside. If I change entirely over to electric I'll likely keep the range hood recirculating and install a central ERV or HRV that pulls air from the kitchen to manage winter time air pollution throughout the house.