I quite often put leftovers such as lasagne/curry in tubs to freeze. Even after washing them they still smell of whatever it was. It really puts me off as I am a vegetarian and don't want to put my soup or whatever in a tub that stinks of chicken curry! Has anyone got any tips on how to get rid of them? I find leaving lids off helps a bit but then I've got loads of lids and tubs with no lids everywhere! 