The spread of the MRSA superbug strikes fear in many. But for an entrepreneurial few, it's prompting a burst of marketing for products and services that they maintain can foil the scary drug-resistant staph bacteria. From disposable condom-like covers for stethoscopes to room-fogging that dispenses disinfectants originally created to fight bioterrorism, the MRSA fear factor is spurring an anti-MRSA industry.