Any idea what this leak is?

2016 CX-9 Touring owner here. I smelled something bad coming from the engine today. It looks like there is a leak. From the color of the liquid, I would say coolant. I checked the coolant level and it was over F. Any idea what’s going on? (Please don’t say cylinder head crack thing, already over 150k mi here)

2016 CX-9 Touring owner here. I smelled something bad coming from the engine today. It looks like there is a leak. From the color of the liquid, I would say coolant. I checked the coolant level and it was over F. Any idea what’s going on? (Please don’t say cylinder head crack thing, already over 150k mi here)