I used to be the school (cadet) armourer. The smell of Youngs 303 was, I thought, a wonderful smell of familiarity. We used to make an emulsion of it by mixing it with water in a container and using to do a first scrub of the Lee Enfields after firing ( We had to source 1950s cordite ammo as nitro couldn't be stabilised in the throat-burned Korean war surplus rifles we had ) but I wouldn't describe it as particularly pleasant. A couple of us shot in competitions away from the Cadets and Schools offerings , and so used a couple of 7.62 Parker Hales for the occasion. Hoppes 009 was a real eye-opener. Absolutely loved the smell of that!
If you want a really pleasant/good enough for aftershave oil though, get yerself a can of GT85. It's a cracking protective oil without the de-greasing additives found in WD40, and smells absolutely divine!