I suppose you’re right about that. All I know is I would not live any where near a fertilizer or chemical plant. I would tell my realtor to look in a different location. We used to live near a rendering plant and I can tell you that sometimes the smell was so bad that it wilted the flowers! I’m serious.
I’ve lived in the US, south of I-10 from coast to coast, for 43 years. I can promise you I’ve lived near a plant (from de-desalination to chemical to oil to just about every other kind) in those 43 years.
I live 35 south of Houston in “rural” unincorporated county now. I live near (less than 5 miles) places that “clean” trucks. I also live in between two prisons, and about 1 mile or so from an old rice dryer. I’ve been at a fire in the chicken coops at the prison (ugh, burning chickens and chickenshit - UGH).
Good luck living anywhere NOT near a plant.