combustion (burning) byproducts are the primary harmful particulate matter created by cooking, whether that be from gas or food. like most issues, incidental co

combustion (burning) byproducts are the primary harmful particulate matter created by cooking, whether that be from gas or food. like most issues, incidental contact isn't enough to worry about, but if you're a cook (commercial or home), then you're likely getting meaningful exposure. it's not an issue for kids unless they're doing the cooking every day. the range hood should either be vented to the outside or sufficiently filtered (or both), but most filters are inadequate, so venting to the outside is the more foolproof strategy. but this is likely a very small factor for nearly all people. cars (oil) and electricity generation (coal and gas) create most of the harmful particulate matter in the air (and water and ground), so that's where we should focus our anti-pollution efforts first and foremost.