Rotten egg smell when driving forty five to sixty five mph

I have been smelling rotten eggs occasionally when driving between forty five and sixty five MPH. It does not smell like that all the time. Just every once and awhile while accelerating. Does anyone know if this would work? I know it works for fuel system cleaning, but would it clean out my exhaust? I am thinking maybe the catalytic converter or exhaust is clogged and needs to be cleaned. I do not want to risk buying a catalytic converter destroying anything if I use this product. A lot of people got good results. But I want a professional opinion so I will not need to buy a catalytic converter in months ahead for using this product because it destroyed it. The point is, is it safe to use without defecting any of the exhaust components and experiencing any problems down the road because of the product?

Hi-Gear HG3270e EZ Emissions Pass & Catalytic Converter Cleaner, 15 fl. Oz.