Can cologne go bad? or change scent?

yep, i kept my Dior pure poison perfume on my desk near a window and eventually the smell of it changed completly. It wasn't bad, just a little weird. In this case it changed quite fast, in a matter of weeks.Another bottle that i had for years and didnt use very often changed as well but very slowly.

As far as I know it depends on where the cologne was based. I had an oil based cologne and I spilled it in my bag, after some time my bag has some weird and bad smell. Though I've never experienced it with other colognes like the alcohol based and water based (They evaporate fast).

Yes it can, if left directly in the sunlight or you haven't used it within a year or 2 chuck it out and get some more! :)

Maybe after a long time but this would take years I believe

could you answer mines

http://answers.yahoo.com/question/index;_ylt=AqrV7...

smells like cans of lynx cant go off i really doubt it stick to them if you dont use it that much something like lynx sharp focus!

to keep your fragrance smelling fresh and clean just like you want to be, keep it in your fridge.

Thank you everyone for answering