I have found that the lids from the small 4 oz. juice bottles (like Gerber brand) fits the regular size baby bottles. You can use the juice lid and shake the bottle, then put on the nipple.
Baking soda will take the nasty, sour milk smell out of baby bottles. Just fill them with some warm water and a spoonful of baking soda. Shake it up well and then rinse it out. Then you can wash them as usual...
