Scent navy being upset about end of admiral - this one? (6)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

NOSE (scent, especially in wine-speak) + N (abbreviation for navy, as in RN for the Royal Navy), all reversed (upset = upwards in a down clue), around the last letter of [admira] L . Extended definition: Admiral Horatio Nelson – the navy were presumably very upset when he died during the Battle of Trafalgar.