i went through this with my 150. there's a cosmetic company called japonesque, that makes brushes, sharpeners, etc. they have a brush cleaner that has a very distinct, citrus-y scent. it works as well as, if not better than, mac's brush cleaner, and comes in a convenient spray bottle. it'sabout $10 and i got mine at ulta. nordstrom's cosmetics departments sell the brand, also. the scent of the cleaner makes the brush hair smell a lot less noticeable.