fluid leak and after ignition turned off smell of gas on 2015 tahoe, why?

What is your question?

first message on monitor dash of overheating and the antifreeze was dry. seemed to run okay after antifreeze added. 3 days later the fluid leak and strong gas smell after ignition turned off.

What makes this problem better or worse?

afraid to drive it

How long has your 2015 Chevrolet Tahoe had this problem?

noticed the smell a week ago.