2G EVAP code large leak detected???

[2g420aeclipse]

Alright hopefully I explain this right. My car has an EVAP code I forgot what code is it. I believe it's P0455 is the one with large leak detected. Now every time my drive my car to point A to point B there's this strong odor which I believe it's carbon monoxide because it gets me light headed and dizzy. Could this be coming from the exhaust because there's some holes. the exhaust is old except the tailpipe the car has 200k miles. Or it can it be something else???. I know that the code says that it can be the gas cap but can the gas Leave a strong odor which making me light headed or dizzy

 

[Lou98GSX]

You should fix both your problems before they get worse and see if your dizziness goes away.