Percocet used for pain relief is a narcotic medication and prescriptions can prevent people from getting high on Percocet without medical reason.In fact, the Percocet high feeling can get you into lots of problems.
I think the formula of the perfume itself decides how fast it will spoil. My perfumes from Britney Spears Curious and Salvatore Ferragamo went bad within a year and a half. The Britney Spears one developed some precipitation and started smelling like alcohol, while the Salvatore Ferragamo just smelled plain weird.
When beer goes bad: Acetaldehyde. Acetaldehyde smells and tastes like fresh green apples in beer. Open a bottle of Budweiser to taste it as Bud contains a little acetaldehyde which adds a fresh, crisp flavour. If itâs present in stronger beers or in higher volumes then it might smell like bruised old apples, solvent or paint.