i was wondering if this is possible? say for example i have my imac, macbook and ipad each downloading different things at the same time, whilst i am on a windows computer that suddenly becomes infected with a virus... could that virus spread to the other 'i devices' if they were all connected to the same wifi? or is that impossible? my windows computer was infected with a virus, and i don't want anything being spread to my mac computers and ipad you see. ... or would the ipad and imac, and macbook be uninfected?