I dilute and bake everything I get, even sandoz cyp from the pharm. I got burnt one time - must have been a bad batch with heavy solvents in it but after I took a shot my tail swelled was red and horrible test flu, I baked vented, diluted with a little USP oil and filtered the batch and it was good to go.
I mean no disrespect but who knows what the lab making it is putting in it solvent wise, and what type of oil they use?
And as you stated, many people are sensitive to the benzyl compounds they put in them among other things.
Try diluting a bit with sterile oil, if that doesn't help along with the other tips baking and venting helps tremendously.
I know you mentioned short esters but at what dose.
As everyone knows pharm grade sustanon will light you up due to the prop and fast acting esters, and in the past I have diluted it with sterile oil and was fine.