mine smells like fruit fruit and tar mix. (i donno what deisel smells like, but this sounds like it could be it?) it is extremely pungent. reeks! it 5 weeks in now, and it smells more then the plants that are ready to harvest. my chernobyl is a keeper. check out my new log https://www.rollitup.org/subcools-old-school-organics/491080-chernobyl-day-33-reveg-grow.html (to left is a link). some pics in it.
I would pop more chernobyl till you find this pheno!!