I have an induction cooker. It doesn't have the gas issue but magnetic, eletric and eletromagnetic fields are orders of magnitudes above the safety values according to my measures. I don't know how safe that is on the long run (and AFAIK nobody does). Yet the scientific consensus is slowly changing to show that non-ionizing radiation isn't as safe as previously thought and is linked to brain cancer and male infertility among other things.