2003 GT p0172 p0175 p1130 p1150

[newedge4.6]

My car was misfiring for a while, I replaced the spark plugs, COPs, then fuel injectors which fixed the misfire. Shortly after fixing it I got these codes saying both banks are too rich and o2 sensor malfunction. Could the misfire have ruined my o2 sensors or made them too dirty to function? I also smell gas in the cabin when my heat is on which never happened before.