hi guys I just want to know what it means when my coolant that I pulled out of the reservoir tank smells like some..... I really don't know what is smells like b*** smells like um maybe exhuast or something really powerful and strong. When you smell it you just naturally repel away from it. Almost chemical like. Is it combustion gas leaking from my head gasket?

 

if it's maybe exhaust, then yes. otherwise, never heard of coolant going sour.

MGTF - Coolant Sniff Test - YouTube