I know that sounds weird ...
The kamikaze-way of problem-solving:
How about if YOU behave as if YOU were drunk ?
When some cabin crew member notices your behaviour
they'll also notice the smell.
But they'll soon realize that it is not you who smells a bit drunk :-)
Now you've delegated the problem to the cabin crew ;-)
Well, honestly: I would ask him/her to go sick because
"I think you don't look too well - are you sure that you're fine ?".
And depending on whether there'll be some kind of discussion or
not you can alternatively insinuate that it ultimately will be you
who doesn't feel good (in that situation).
On the other hand: what does your behaviour show if you decide to keep ignoring alcohol smell in the cockpit ?
Maybe inferiority and a lack of backbone ?
Just consider it a "test" for a moment - what if HE/SHE is testing
you and your reaction ?
So, go and tell him/her that you've smelled the alcohol and ask
whether you've passed that test :-)
regs
AGL