Burberry Her eau de parfum

I bought a bottle of Burberry her around 4-5 years ago and am using it for more special occasions but for the last two years the smell has changed? It smells more spicy and warmer. It doesn’t smell bad but it’s definitely not as airy and fresh as it once was. It’s kinda comical that I’m only now thinking to ask but can anyone tell me if it’s went bad or is it just like…aging? If this is relevant there’s like a weird scale around where the perfume sprays out and I’ve tried cleaning it with alcohol multiple times with no luck, I can’t tell if the perfume has rusted the nozzle area or if it’s disintegrating** **it or what. Anyways if someone could help me out that would be appreciated.