SQP1, rest assured you're under no threat - your opinion is valid!
BLuken, you've asked two good questions;
1. I've been flying B757's for 13 years now; 5yrs with DHL using RR RB211C5 engines. I can honestly say I have never noted any sort of obnoxious smell on the E4 engine models. Problems with the C5 engines were first highlighted by an ex DHL pilot back in 2004; following that there have been an increasing number of complaints. At least 42 pilots have been associated with ASR reports.
2. I'm not sure how to answer the second part of your question without stiring up emotions but I do think it would be fair to say, the engineering department have been working hard to improve the status quo.
Unfortunately the subject is still highly emotive but MY PERSONAL VIEWPOINT is that the fault is unlikely to be totally eradicated until such time DHL either replace or overhaul the problem engines.
Many pilots have voted with their feet and left the company, some worry about the response they are likely to receive from management, and others cannot detect a problem at all.