Unless that clear plastic intake screen is crystal clear, you may well have a tiny bit of crud holding an injector open, this causes smoke......

I'd replace both filters and do a Diesel purge first then f it still smokes and still has crud in the intake screen, address the fungus issue, only when it's gone can you expect new/rebuilt injectors not to drool and smoke excessively .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better