As Rush says, it's nothing more than some folks trying to legislate a nusiance.
I remember in fifth grade smelling something horrid coming from somewhere during the lunch/recess period. I didn't know what it was, but it almost made me sick enough to want to go back indoors. Turns out it was butter burning somewhere in a house that bordered the school's property. My Dad wasn't the best cook back then and he was easily able to re-create this odor some years later.
Imagine if they passed a law banning the emissions of burning butter in certain areas based on some, "Study," that linked it to cancer or some other physical thing. Imagine if there were intensive governmental regulations instituted to safeguard the public from this smell when butter is used in breakfast diners and seafood resturaunts. Imagine them increasing the taxes to more than triple to help, "Burning butter-related ailment," costs to taxpayers for paying for the healthcare of the victims of this odor.
I'd better shut up now. Someone might be getting ideas around here....
nusiance = nuisance
You're probably right. I imagine the Super Neurotics around here are already developing symptoms and drawing up the petitions.