Stinky during regen

[BlueF350]

My 6.4 really stinks during regen if I'm sitting still like at a stop light. I dont smell it on the highway. Anyone else have this issue and an idea of what might be wrong? It didnt used to do this. BTW, 70k miles on my 6.4.

[Stroked777]

its just the normal smell during regen i would suspect, the reason you dont smell it on the highway is because your moving and not stationary where the wind can bring the smell from the tail pipe