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.
A heavy raisin smell is another bad signal. The red wine tastes sweet. If the bottle of red wine has the aroma of Port or tastes like dessert wine (even though it is neither of those two things), it has been overexposed to heat, and is therefore undrinkable. The cork is pushed out slightly from the bottle. That's a sign the wine has overheated and expanded within the bottle.