THE LAST (3) TIMES MY SON HAS BEEN IN OUR 2016 FORD EXPLORER HE HAS VOMITED. HE IS 2.5 YEARS OLD AND WE HAVE A DAUGHTER ON THE WAY IN 2-3 WEEKS. IT IS JUST NOW CLICKING THAT THIS IS PROBABLY A CO2 ISSUE SINCE HE IS ALWAYS FINE ONCE HE GETS OUT OF THE CAR. IT IS ALWAYS ABOUT 10 MINUTES AFTER DRIVING. HE BECOMES DIZZY AND LOOKS DOWN. IT IS AWFUL. WE HAVE TRIED TO GET THE PART FROM FORD FOR WEEKS BUT THEY SAY THEY ARE BACK-ORDERED. PLEASE HELP!