However, you should be very aware that this mask will only stop you from spread your germs. The "filter" won't do anything to what you breath in. According to health experts in Victoria Australia, an easy test of how effective a face mask filter is, is to see if you can smell anything through it. If you can, then the filter is ineffective, which is the case with this mask and its filters. But then, if you're expecting that level of performance from this product, then you've come to the wrong place to buy a face mask.