Avoiding synthetic or artificial fragrances will go a long way towards improving your health. These implicitly harmful petroleum-based fragrances have been implicated in a host of chronic diseases. They are categorized as neurotoxic, excitotoxic and some are even carcinogenic (cause cancers)!
They also contain “scent suppressors” (think of products like “Febreeze”). Scent suppressors inhibit and reduce your ability to smell and taste, which in turn, limits your ability to “smell” when something is harmful and should otherwise be avoided!