Catalytic Converter Problem?

Syleng1, not a silly question, I'd be asking the same thing. I'm a double lung transplant recipient, had the cats installed to help lessen the fumes for health reasons, wasn't an easy decision to make at the time to have these installed on a car that would never have them in the first place, there the high flow ones so not very large in size, but they did lessen the fume smell dramatically, way more then what I ever expected.