Microban Exposure from Breathing?

My assistant just bought a floor pad for me that says “microban” on the label. I know that microban is an antimicrobial, but since it will be 5 feet from my nose, I don't suppose there is a need to be concerned about toxicity. However, if it wears away like my old pads do we'll be tracking the dust onto the living room carpet. But then I don't sit on the floor so maybe that's not an issue either. I would not buy a Rubbermaid dish drainer because it has microban, but this is different.