I cleaned my earphone and the glue and front part of the earphone fell,I cant hear on the left side?

If you are unable to hear so it may be damage, because these accessories are very sophisticated, if once it damage so there is no other option to over come up with it, instead buy new ear phone, right now need to go any where just search online....online earphones and you will meet with lots of option as like amazon, infibeam.com etc....i think you search will be stop here.