Is there a carbon monoxide problem in NASCAR?

“…with the advances in technology, there’s no reason for every one of these cars and trucks to go out there with a sensor in the cockpit that will alert the driver and send a signal to NASCAR when carbon monoxide levels get too high…”

https://www.frontstretch.com/2019/06/21/4-burning-questions-is-there-a-safety-issue-brewing/