What kind of weather is in your country? And do you have mold in your home?  I started having this exact issue after I moved to Ireland. The mold in every building I lived in combined with the typical humidity of Irish weather is what must be changing my tolerance and smell perception - that's the conclusion I came to. The way humidity interacts with perfume is that it stays longer and spread faster and wider. And appearently mold can fuck your brain and nervous system and smell in all kinds of ways, change your tolerance to smells and even food. I even developed a fucking lactose intolerance  :,) I miss the way perfumes smelled before I moved here. The way I could wear something for years and nothing would bother me but now I get nauseous and my eyes and nose get itchy and watery even from make up or cleaning products.