Hello. For those after a "Chanel-ish" perfume but cheaper, I always recommend Marks and Spencer "New York" from their Autograph range. It's a floral aldehyde. Has less sillage and staying power than the Chanels (not a totally bad thing, to my mind) but is available in super-cheap, hand-bag sizes, so you really can carry it with you and re-fresh yourself.
I know people rave about the Lidl one but that gives me a head-ache - though I quite like it on other people.
I think the M and S one is pretty lovely in its own right. 