Nemo smells like a dirty diesel

[ohspecial1]

Hi Folks

Any ideas i stopped car today just to check something and yes engine was still running but

Smells like a dirty diesel

Sounds silly but cannot be normal can it

[PaulC5]

You are going to have to provide more details, engine type, where does it smell and do you want any help.

[ohspecial1]

1.4 Diesel nemo so will be fiat i guess
Spoke to ex car macanic today as was visiting
He says it smells a bit rich so like over fueling